Release-Notes.txt

0.5.34 - 12 June 2009

This release significantly improves the Halyard developer GUI in a number
of long-overdue ways:

 1) We now support creating new Halyard-based programs from the GUI.
 2) The "Recent Programs" list finally works.
 3) We have an icon on the Macintosh.
 4) Halyard's old SashFrame class has been replaced by a new AUI-based
    GUI, complete with dockable palettes.
 5) The listener's focus and scrolling behavior has been improved
    significantly.
 6) We now have a "Media Info" palette which shows the path and timecode
    of whatever element the script is waiting on.  This is experimental,
    and will be refined further in future releases.

This release also includes a few compilation fixes for recent Ubuntu
versions of GCC.  It probably wouldn't be too hard to get a very primitive
Linux port of Halyard running if anybody is interested.

This release introduces a new function in the unit test API,
RUNNING-ALL-TESTS?, which specifies if we are currently running
through our unit test sequence.

Brian Campbell (3):
      Cairo: Remove warning for drawing 0-area rectangle outline
      Merge branch 'autogen-update' of git@github.com:lambda/halyard
      Halyard.sln: Don't build unnecessary projects in Libraries phase

Christian Persch (2):
      autogen: Add -Wno-portability to automake invocation. Bug #529120...
      autogen: Support for automake 1.11

Eric Kidd (26):
      StartupDlg: Implement "recent files" list
      ScriptEditor: Only scan for identifiers in source directories
      StartupDlg: Implement "new program" radio button
      Stage: Factor common code out of OpenDocument, NewDocument
      StartupDlg: Rename mRecentFiles -> mHistory
      Stage: Factor out AddFileToHistory calls
      Reorganize .gitignore and add .DS_Store
      Mac: Add application icon and Info.plist
      wxAui: Convert StageFrame to use wxAui
      wxAui: Convert ScriptEditor to use wxAui
      wxAui: Reduce minimum window size for ScriptEditor
      wxAui: Bug fix: Remove extra CreateToolBar call
      wxAui: Save and restore frame sizes
      DocNotebook: Make a note of a long-standing Mac bug
      wxAui: Remove obsolete "TODO AUI" comment
      Mac: Make CFBundleExecutable name uppercase
      Remove ancient timecoder demo
      wxAui: Convert Listener to use wxAui
      wxAui: Tweak Listener behavior on Windows
      ProgramTree: Get rid of useless "Cards" node
      Merge branch 'aui' of git@github.com:emk/halyard
      wxAui: Allow user to reset frame perspective to default
      Bug fix: Cairo: Fix TransformRectToUnitSquare regressions
      wxAui: Add a "Media Info" pane with paths & timecodes
      Revert "HalyardCheckAssertion: Correct type of inTest to bool"
      wxAui: Fine-tune spacing of "Media Info" palette

Robinson Tryon (11):
      HACKING.txt: Clarify win32 build instructions
      Remove unneeded declaration of Halyard::TStateDB
      HalyardCheckAssertion: Correct type of inTest to bool
      Include string.h explicitly when using strncpy
      Remove extra specifier from ~StyleRep()
      Make #endif lines use proper syntax
      Change default values to have correct wxString type
      Unit tests: Create/provide function running-all-tests?
      /bugs: Add card /bugs/bug-f12767-measure-text-space-before-newline
      /m4: Update ax_boost_unit_test_framework.m4 to the latest version
      /m4: Update ax_boost_test_exec_monitor.m4 to the latest version

Rodney Dawes (1):
      autogen: Only pass --enable-maintainer-mode when AM_MAINTAINER_MODE is...

0.5.33 - 4 June 2009

This release introduces a few more performance optimizations.  At this
point, we believe that we are doing no unnecessary primitive calls for
basic element creation, and that primitive call overhead is no longer
the bottleneck.  Since release 0.5.30.1, we have improved performance on
element creation by a factor of around 3, and on primitive call overhead
by a factor of around 20.

This release updates draw-text and draw-graphic to return the bounding
box of the item drawn.  This can help DRAW methods avoid an extra
primitive call to measure text or a graphic.

Brian Campbell (3):
      Performance: Remove extra primitive call to WakeUpIfNecessary
      Performance: Only call StateDbUnregisterListeners if we have listeners
      Performance: Disable trace logging for primitives

Eric Kidd (4):
      Bug fix: Only expand WITH-DC argument once
      Performance: Return bounding box from draw-text and draw-graphic
      Don't build log messages for primitives if we don't need them
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard

0.5.32 - 2 June 2009

In this release, we replace Halyard's offscreen drawing routines with
Cairo.  Cairo is a fast, portable 2D graphics library, used by Firefox,
Gnome and many other open source projects.

We're merging the Cairo branch slightly ahead of schedule, because we're
in the middle of performance tuning, and Cairo appears to be
significantly faster than our old drawing code for at least one
operation (drawing rectangles in transparent overlays), and potentially
faster for a few other common operations.
    
Here is some data from the /benchmarking card.  All times are in
microseconds, and numbers are accurate to the nearest 100 microseconds
or so.  These benchmarks were performed in a Parallels VM on a year-old
MacBook Pro, and Halyard was compiled in Release mode.
    
                        Before  Cairo
  a. Clear opaque overlay  462    260
  b. Fill opaque overlay   500    280
  c. Clear alpha overlay   380    280
  d. Fill alpha overlay   1982    382
  e. Draw graphic          802    742
  f. Mask                  702    822
  g. Draw text            1022   1120
  h. Measure text          922    842
    
Operations (a)-(c) appear to be faster, although the improvement is near
the margin of error.  Operation (d) has improved enormously (and
consistently, across many benchmarking trials).  Other operations are at
or near the margin of error, with slight performance decreases in (f)
and (g).  These latter two could very well be real--there are
non-trivial code changes on both paths.  But as the values of (a) and
(c) in the first column show, equivalent operations can vary by a
hundred microseconds or so.

This release fixes several long-standing drawing bugs, and adds several
new APIs.

* Bug fix: Diagonal lines now work on transparent overlays
* Bug fix: Opaque images now on transparent overlays

Now that we're using Cairo for offscreen drawing, we can support all
drawing operations on transparent overlays.  This means no more "image
with a single transparent pixel" hacks.

* New: draw-oval and draw-oval-outline

This version of Halyard includes two new drawing primitives.  Note that,
in general, we don't intend to export a large number of these
special-purpose primitives.  Instead, we hope to export Cairo's more
flexible API, which can draw a wide variety of images using a relatively
small set of functions.

* New: %graphic% now takes :scale, :scale-x and :scale-y parameters
* New: draw-graphic and measure-graphic now take :scale-x and :scale-y
    parameters

On an experimental basis, we're now exposing the ability to resize
images.  These parameters are floating point numbers, relative to a
scale 1.0.  In the future, we _may_ decide to move the scale parameters
from %graphic% to %custom-element%.

Eric Kidd (33):
      DrawingArea: Add basic Cairo support
      DrawingArea: Add support for DRAW-OVAL and DRAW-OVAL-OUTLINE
      DrawingArea: Factor common code into CairoContext
      DrawingArea: Draw rectangles using Cairo primitives
      Add example code for diagonal lines
      DrawingArea: Draw lines using Cairo
      DrawingArea: Clear DrawingArea using Cairo
      DrawingArea: Draw letters using Cairo
      DrawingArea: Rename CairoContext::GetSurface -> CreateSurface
      BREAKS WIN32: DrawingArea: Re-implement Mask using Cairo
      DrawingArea: Delete DrawingAreaOpt.{h,cpp}
      BREAKS WIN32: DrawingArea: Draw bitmaps using Cairo
      Remove last vestigial support for _INCR_X, etc.
      DrawingArea: Add scaling to DRAW-GRAPHIC
      DrawingArea: Move CairoContext into a separate file
      pixman: Put pixman.lib into pixman build directory
      DrawingArea: Factor out bitmap measuring code
      BREAKS WIN32: DrawingArea: Composite onto stage using Cairo
      Stage: Use Cairo to manage clipping regions
      Cairo: Create a CairoSurfacePtr class
      Cairo: Extract CairoBitmapContext from CairoContext
      BREAKS MAC: DrawingArea: Use a cairo_image_surface instead of a wxBitmap
      Cairo: Include error strings in error messages
      FIXES MAC & WIN32: ImageCache: Store loaded images as Cairo surfaces
      Rename (graphic|surface) -> image in ImageCache, DrawingArea APIs
      Clean up *Pic primitives.
      Stage: Clear path after setting up clip
      Make splash screen copyright text more attractive
      Benchmark: Allow (benchmark ...) form to appear anywhere
      Benchmark: Add benchmarks for simple drawing calls
      Merge branch 'cairo' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard
      DrawingArea: Do not try to fill 0-area shapes
      Merge branch 'v0.5.31-fix' of ssh://imlsrc.dartmouth.edu/var/lib/git/halya

0.5.31.1 - 2 June 2009

This release fixes a regression introduced by the previous release.

Brian Campbell (1):
      Bug fix: Initialize :shown? on %custom-element% correctly

0.5.31 - 1 June 2009

This release introduces a number of simple performance optimizations.
Element creating has always been slow, so we have done some
benchmarking, and discovered several quick and easy performance
optimizations that buy us a good deal of extra performance.  We also
expose a bit more of our benchmarking to Halyard programs, so we
can more easily compare the differences in performance depending on
the size of the program we're running or other factors affected by
the program (like monkey patching).

In order to set up engine nodes, such as setting their in-drag-layer?
and shown? properties, after they have been created, we have created a
new method that is overridable on nodes,
.FINISH-INITIALIZING-ENGINE-NODE.  This is called after
.CREATE-ENGINE-NODE, to allow further initialization to be overridden
separately.

Brian Campbell (5):
      kernel.ss: Cache results of have-prim?
      nodes.ss: Cache node .full-name computation
      Move Halyard benchmarks from test into runtime
      Add Noop and UntracedNoop primitives for benchmarking
      Performance: Don't set element parameters to default values on setup

0.5.30.1 - 27 May 2009

This release is a build fix for 0.5.30, which did not have all of the
build dependencise listed and thus could not be reproducably built.

Brian Campbell (2):
      Build fix: Remove unnecessary libraries from PLT build step
      Build fix: add extra dependencies to wxRC

0.5.30 - 26 May 2009

This release upgrades the engine to be able to run on top of wxWidgets
2.9 RC 3, while maintaining compatibility with wxWidgets 2.8 for the
Mac build.  We updated wx and wxIE to their latest versions, and
forward ported our patches to apply to them.  We also have also sent
some of these patches upstream, in the hope that we will no longer
have to maintain them separately.  We also did some more Unicode
cleanup in order to build against the new wxWidgets.

Things to look out for, that may have broken or changed; we have tested
most of these things, but there may be corner cases that were missed:
  - Keyboard commands.  We fixed a few bugs with keyboard commands such
    as the escape key, but there may be something we missed.
  - Text entry widgets, and other native controls.
  - Performance.  We have not noticed any performance regressions, but
    it would be good to be on the lookout.
  - The script editor.

The patches below marked as BROKEN mean that the build was broken, the
program would not launch, or the program had significant crashing bugs
at that stage of the porting process.  We have allowed these to remain
in the history to document the upgrade process, but marked as BROKEN so
we can avoid them when bisecting history and the like.

Brian Campbell (5):
      BROKEN: Port to wx 2.9
      BROKEN: wxIE: Re-apply constructor race fix to wxactivex.cpp
      BROKEN: wxIE: Port our interface changes forward
      BROKEN: Add more required wxWidgets projects and update dependencies
      BROKEN: Override wxGUIAppTraits to install custom event loop in wx 2.9

Eric Kidd (16):
      BROKEN: Update Quake 2 for wxWidgets 2.9
      BROKEN: Fix custom build using wxrc.exe
      BROKEN: Organize projects into folders
      BROKEN: wxWidgets: Use non-DLL C runtime
      BROKEN: Remove unusued Halyard.sln configurations
      BROKEN: Replace wxIE with new version from wxPython
      Fix cross-fade crash using wxMemoryDC::SelectObjectAsSource
      Mac build fix: Explicitly convert "About" text to Unicode
      ScriptEditor: Replace irregular use of L"..." with wxT("...")
      wxWidgets: Ignore build byproducts and Emacs backup files
      ScriptEditor: Always use standard syntax highlighting
      ScriptEditor: Reapply our FindText patch
      Remove deprecated wxWidgets 2.6 APIs
      ScriptEditor: Fix indentation, etc., for square brackets
      ScriptEditor: Properly handle enter key in find dialog
      Stage: Intercept Escape manually if menu accelerator fails

0.5.29.1 - 18 May 2009

This release fixes a build regression in the previous release.  When we
upgraded to Windows SDK 6.1, we hadn't tested the PLT build process,
which wound up failing.

Brian Campbell (1):
      Build fix: libs/plt

0.5.29 - 23 April 2009

This is the first official build with the Electric Gibbon branch
merged; Electric Gibbon is a new testing tool for simulating clicks on
elements while jumping to each card.  See the release notes for the
Electric Gibbon branch releases for details.

This release adds the %url-request% class and subclasses, to support
communicating over HTTP asynchronously from Scheme, including GET and
POST requests that send and parse JSON.  Support for proxies is
incomplete in this release.  This is a work in progress; the API is
not yet stable.

This release updates the primitive logging machinery.  Primitives are
now logged along with their arguments before they are executed, to let
you tell what primitive was called before a crash occurred.  They are
also logged after the primitive returns, to show the return value.

Brian Campbell (10): 
      Installer: Pass "." as argument in shortcuts instead of full path 
      TPrimitives: Move formatting of strings and booleans into TValue 
      TPrimitives: Remove TArgumentList::GetListArg() and corresponding 
        operator>>
      TPrimitives: Suppres noisy primitive logging using log4cplus
      TPrimitives: Suppress logging of fewer primitive calls
      TPrimitives: Move all operator>> declarations to one place
      TPrimitives: Log prim calls before and after they are executed
      TPrimitives: Remove unused int16 version of operator>>
      TPrimitives: Factor out many formulaic operator>> functions with a 
        template
      TPrimitives: Reverse direction of >>> and <<< when logging primitives

Eric Kidd (28):
      eg: Make infinite loops result in non-fatal errors
      TLogger::ConsoleAlert: Display "WARN:", not "WARNING:"
      Allow unrestricted access to the network
      Upgrade to libcurl v7.19.4
      Add asynchronous %url-request% element
      %url-request%: Properly clean up engine element
      %url-request%: Make changes suggested in code review
      Add more trace statements for elements and %url-request%
      %url-request%: Report HTTP status >= 400 as a failed transfer
      Mac: Require libcurl v7.19.3
      %url-request%: Add HTTP POST support
      %url-request%: Add support for getting the response Content-Type
      %url-request%: Add support for sending 'Accept' header
      EventDispatcher: Fix argument name for DoEventProgressChanged
      /features/browser: Extract %progress-bar% class
      %url-request%: Implement progress events
      %url-request%: Make %easy-url-request% part of the official API
      %url-request%: Rename .success? -> .succeeded?
      json: Implement %json-request%
      json: Send "Accept: application/json" with JSON requests
      json: Merge most of %json-request% into %easy-url-request%
      %curl-request%: Add stub function for configuring proxy servers
      Update to Windows SDK v6.1
      proxy: Query for IE settings and log
      proxy: Fix boolean casting warning
      proxy: Assume ":" and "::" in proxy or proxy_bypass mean "no proxy"
      proxy: Honor proxy, but ignore proxy_bypass for now
      Merge branch 'master' of git://github.com/lambda/halyard

Tony Garnock-Jones (1):
      json: Import 3rd-party JSON library

0.5.28-gibbon6 - 25 March 2009

This release adds a number of enhancements to Electric Gibbon, including
support for using release engines with halyard:jump_each:test, support for
catching multiple Halyard errors in a single test run, and support for
detecting certain kinds of infinite loops during halyard:jump_each:test.

Detecting multiple Halyard errors required us to add Yet Another Logging
hack.  Since the old TLogger code was about 20% archaic code, and about 80%
festering hacks, we refactored it into something cleaner and started using
log4cplus for the actual output.  The new code is very shiny, but alas, we
had to add one last tiny hack to get the our new features working anyway.

If your halyard:jump_each:test runs are taking way too long, try:

  rake halyard:jump_each:test MODE=release

PORTING NOTES:

  - Remove config/developer.prefs and decide whether to use
    ENABLE-DEVELOPER-TOOLS-IN-ALL-MODES!.
  - All of the old logging functions are deprecated, though they should
    still be fully supported by deprecated.ss.  I'll be putting up a wiki
    page explaining the new logging functions and levels shortly.

Brian Campbell (2):
      Mac build fix: Cast to uint32 when setting /system/clock/milliseconds
      log: Remove redundant (cat ...) statements from nodes.ss

Eric Kidd (42):
      log: Combine gLog and gDebugLog into unified logging API
      log: Remove environment-error
      log: Remove TLog mask support
      log: Fix comment in TPrimitives.h
      log: Replace WITH-ERRORS-BLOCKED with WITH-EXCEPTIONS-BLOCKED
      log: Promote expensive event logging to a debug message
      log: Mac build fix: Add abort() to TLogger::Fatal
      log: Move static functions from TLog to TLogger
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard in
      log: Move TLog into its own file
      log: Move vsnprintf (and buffer) into TLogger
      log: Add LevelFromString and LevelToString functions
      log: Move warning inteception code to TLogger
      log: Reorder TLog::Warning and TLog::Error
      log: Bug fix: Use correct level for LOG-ERROR and FATAL
      log: Move alert-display code into TLogger
      log: Move ExitWithError into TLogger
      log: Make level-based conditionals simpler
      log: Get rid of level-specific functions in TLog
      log: Move trace messages into new Trace.log
      log: Log loader/stage2 progress at level TRACE
      log: Log user-initiated events, etc., at level DEBUG
      log: Test fix: Remove remaining debug-log references
      log: Log "unexpected errno" at level TRACE
      log: Add rudimentary log4cplus support
      log: Move log4cplus configuration to external file
      Add a SetEnvVar function
      Add FileSystem::Path::operator/
      log: Configure log4cplus using an external properties file
      log: Add __declspec(noreturn) to TLogger::Fatal
      log: Remove old TLog class
      log: Clean up log4cplus initialization
      log: Register log files with CrashReporter
      log: Ignore rolled-over log files in Common/test
      log: Shrink log file sizes considerably
      log: Log command-line-error at level DEBUG
      Remove TDeveloperPrefs
      halyard/test: Allow users to switch from RUNTIME to AUTHORING mode
      eg: Clean up "New:" lines in output
      eg: Try to avoid infinite loops when replaying actions
      eg: Report multiple errors from a single run of jump_each
      eg: Allow the use of release *.exe with jump_each

0.5.28-gibbon5 - 18 March 2009

The previous implementation of %deep-test-planner% had a number of issues
which were missed in 0.5.28-gibbon4, mostly because the code was such a
snarl.  In this version, rerunning actions to return to a previously known
state should work much more consistently.

Eric Kidd (1):
      eg: Refactor %test-planner% for clarity and fix bugs

0.5.28-gibbon4 - 18 March 2009

Electric Gibbon can now update its test plan to include actions that
only become available once other actions have been performed.  This
required porting our event API from Swindle to Mizzen (although we do
have a reasonably good backwards compatibility layer).

Eric Kidd (11):
      eg: Add unit tests for Swindle-based events API
      eg: Reimplement events using Mizzen instead of Swindle
      eg: Only generate test-actions if .supports-user-interaction? is true
      eg: Generate real events, not just .click
      eg: Move run-next-test-action to %test-planner%
      eg: Code review: Add documentation for events.ss
      eg: Run test actions hidden behind other test actions
      eg: Don't include any more of srfi/1 than necessary
      eg: Merge test action HOVER into CLICK
      eg: Print "Repeating" when returning to a card
      eg: Code review: Reorder %deep-test-planner% and add comments

0.5.28-gibbon3 - 10 March 2009

We're currently running Electric Gibbon heavily against in-house projects.
Here's a small bug fix to make it stop clicking on invisible buttons.

Eric Kidd (1):
      eg: Don't click on elements with :shown? #f

0.5.28-gibbon2 - 5 March 2009

This release changes the interface for invoking jump_each:

  rake halyard:jump_each [START=/card/name]       # Jump to each card.
  rake halyard:jump_each:test [START=/card/name]  # Jump to each and test.

This allows existing programs to keep calling an old-fashioned 'jump_each'.

Eric Kidd (4):
      eg: Split %test-planner% into %(null|shallow)-test-planner%
      eg: Only run test actions when halyard:jump_each:test called
      eg: Add START parameter to halyard:jump_each tasks
      eg: Code review: Add missing word to comment

0.5.28-gibbon1 - 4 March 2009

This release contains some buildscript improvements by Brian, and a
substantial amount of work towards an "Electric Gibbon" stress-testing
tool that allows 'rake halyard:jump_each' to click on buttons.

Porting notes:

  * Please do not use (gensym) to generate names for anonymous elements.
    Instead, please pass ':name #f' and let Halyard generate a name.  Pay
    careful attention to new-FOO functions that wrap (%FOO% .new ...),
    which tend to be the major offenders.

Brian Campbell (10):
      tools: Add announce-build.sh tool for emailing build announcements
      tools: Add announce-build-freshmeat.rb for pinging freshmeat
      tools: Add irc announce bot, for announcing a build on IRC
      fix-prologues.pl: Put correct comment in .rake and Rakefiles
      tools: Add GPL headers to announce scripts
      tools: Fix permissions on announce scripts
      tools: Move #! lines back to beginning of files
      announce-build-freshmeat.rb: Don't print responses unless -v or --dry-run
      Buildscript: Add tool for staging and releasing updates on server
      eg: Comment fixes following code review

Eric Kidd (27):
      halyard.el: Indent backwards-compatibility APIs properly
      eg: Initial files for Electric Gibbon test tool
      eg: Implement a primitive TEST-ACTION form
      eg: Allow test actions to be created manually
      eg: Recurse over child elements when listing test actions
      eg: Look for elements on groups, too
      eg: Document public APIs
      eg: Add a test-action for %clickable-zone%
      eg: Remove unused eq-with-gensym? hack
      eg: Centralizing (gensym) calls for anonymous elements
      eg: Make anonymous element names semi-stable
      eg: Add %test-action% .key method
      eg: Issue a warning about gensym'd node names
      eg: Add extremely primitive test planner
      eg: Test %test-planner% with an actual set of actions
      eg: Add support for resuming a test where we left off
      eg: Remember what card a %test-planner% is associated with
      eg: Document %test-planner%
      eg: Add %test-planner% .done?
      eg: Don't generate test actions for disabled elements
      eg: Integrate Electric Gibbon into halyard:jump_each
      eg: Improve halyard:jump_each output
      eg: Drain deferred thunk queue after each action
      eg: Remove delays during jump_each
      eg: Add :skip-when-testing-card? flag to %element%
      eg: Don't open browser when running jump_each on halyard/test
      eg: Code review: Rename :skip-when-testing-card? -> :skip-test-actions?

0.5.28 - 25 Feb 2009

The only engine change in this release is to remove a few messages
that the crash reporters logs to the debug log, which were obscuring
the underlying message in the report title.

This release also includes several build script changes.  We had
tagged 0.5.27 before updating the build scripts, so this release
contains the build script changes we used to build 0.5.27.  In
addition, we have added a command to buildscript/commands.rb to
allow projects to check out and tag from Git.

Brian Campbell (10):
      Convert .rake files from DOS to Unix line endings
      freeze.rake: Fix ignore regexp for Emacs backup files
      buildfile.rb: Push engine binaries to Git repository
      buildfile.rb: Don't use git clone --no-checkout
      buildfile.rb: Pull and push from Git via ssh: URLs, not git:
      buildfile.rb: Remove Subversion support
      HACKING.txt: remove outdated instructions, and mention modern layout
      buildscript: README.txt fixes
      buildscript: commands.rb: Add command for cloning from Git
      Crash reporter: Remove message about finding curl.exe

0.5.27 - 17 Feb 2009

This release reorganizes the support files used by the installer and the
updater.  In particular, 3rd-party binary files are expected to live in
binaries/, and configuration files now live in config/.

Eric Kidd (10):
      Replace test/buildfile.rb with one from a modern project
      reorg: Expect QuickTime support files in binaries/
      reorg: Expect GnuPG files in binaries/
      reorg: Expect curl in binaries/
      reorg: Move trustedkeys.gpg to config/
      Explain why moving AUTO-UPDATE is tricky
      reorg: Move TRUST-PRECOMPILED to config/
      reorg: Move Autorun.inf to config/
      Include VP3 source code in installer
      Merge branch 'master' into reorg

0.5.26 - 6 Feb 2009

This release fixes several broken pieces related to the update
installer.  When we did the reorg to put the executables into runtime,
which is deployed to engine/win32, we did not update everything else
to match.  This release adds UpdateInstaller.exe to the list of
binaries released to our programs, fixes various units tests and adds
them to the main 'rake test' task, and updates the installer to
install UpdateInstaller.exe to the place the updater expects it.

Brian Campbell (6):
      .gitignore: Ignore doc directory
      UpdateInstaller: Point unit tests to runtime instead of Win32/Bin
      Rakefile: Call UpdateInstaller and buildscript tests during 'rake test'
      buildfile.rb: Add UpdateInstaller.exe to list of released binaries
      Installer: Fix installer rake task to point to windows-installer-final.iss
      Installer: Always install UpdateInstaller.exe in program root

0.5.25 - 5 Feb 2009

We're getting ready for an alpha release of one of our in-house programs,
so it's time to update the copyrights and license information, and fix
some bitrot in the installers and build system.

This release also modifies Quake 2 to stop writing automatic save files and
configuration data to disk.

Brian Campbell (5):
      Updated buildscript to latest version
      Updated buildscript to latest version
      Rakefile: updated 'sign' task to refer to current engine location
      Installer: Include On2_VP3.qtx again
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard

Eric Kidd (6):
      Quake 2: Don't write configuration or auto-saved games to disk
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard
      fix-prologues.pl: Update for 2009 and extend to *.rb files
      Update copyrights to 2009
      Don't use windows-installer.iss for all versions of *.iss file
      LICENSE.txt: Update for 2009 and latest changes

0.5.24 - 9 Jan 2009

This is a minor release fixing a couple of installer-related issues.

Eric Kidd (2):
      Add qtcheck.dll to list of files in a binary release
      Fix path for the updater icon

0.5.23 - 23 Dec 2008

This release includes a new, standardized system for building installers
for Halyard applications.  Just copy config/windows-installer.iss from
halyard/test, customize it for your program, and run:

  rake halyard:installer

This release also removes the code that forced QuickTime safe mode, because
safe mode fails on some machines that work fine in accelerated mode.  Yes,
this is not very convenient.

Eric Kidd (8):
      Add experimental halyard:(un)freeze task
      Update halyard-test *.iss to build primitive installers
      Add halyard:installer task to standard Rakefiles
      Installer: Conditonally enable more files
      Merge installer template into config/windows-installer.iss
      Stop forcing QuickTime safe mode (again)
      Installer: Begin to split out program-specific parts
      Installer: Implement AppShortName using CustomMessages

0.5.22 - 25 Nov 2008

We've finished overhauling the server-side portion of the crash reporter,
and we need some more changes on the client side.  This release includes
both fixes to the crash reporter infrastructure, and workarounds for
various issues discovered by the crash reporter.

Eric Kidd (6):
      Add crash report URL to halyard/test
      Force QuickTime to run in Safe/GDI mode
      Include full text of PortAudio error messages
      Crash reporter: Search for curl executable in script and runtime dirs
      Add %force-crash function
      Crash reporter: Display error if we can't create temp dir

0.5.21 - 28 Oct 2008

Things are definitely beginning to stabilize a bit as we approach 0.6.
We're still planning to do some work on installers, and on various Quake 2
issues.

This release improves support for testing code that uses (jump ...),
state-db.ss and data-file.ss.  It also clears the state-db on each reload,
and catches attempts to override an existing member function using ELEM.

Eric Kidd (7):
      Clear gStateDB when script is reloaded
      Don't allow ELEM to clobber inherited methods
      Updater: Fix AUTO-UPDATE-POSSIBLE? to always use DIR
      Allow expressions to be passed to ASSERT-JUMPS
      Trap unexpected JUMPs while running unit tests
      state-db: Add better supporting for writing unit tests
      data-file: Add better support for writing unit tests

0.5.20 - 13 Oct 2008

This engine extends %CLICKABLE-ZONE% with support for %BASIC-BUTTON%'s
.CLICK and :COMMAND features.  It also improves the buildbot support and
re-enables the old wxWidgets-based crash reporter on Win32.

One new set of restrictions to be aware of: %ELEMENT% .NEW is much better
about checking for errors, and no longer allows elements to be attached to
nodes that are being destroyed.  This may break some existing code.  Of
course, there's a strong argument that such code was already broken, but
just in a much less obvious way.

Please run 'rake halyard:jump_each' before releasing these engines to
Halyard-based projects.  Thank you!

Brian Campbell & Eric Kidd (2):
      halyard-unit: Don't skip first test case when running all
      Bug fix: Fix %clickable-zone% .click

Eric Kidd (7):
      mzscheme: Display error dialog when VirtualAlloc fails
      Don't allow %element% .new to parent elements to a static node
      Remove useless junk from error dialogs
      Add standard .click method to %clickable-zone%
      Jumping to each card: Don't end playback of looping audio
      Bug fix: Re-enable FancyCrashReporter on Windows
      Crash reporter: Fix bugs and add support for COMMAND_LINE mode

0.5.19 - 7 Oct 2008

The major new features in this release are (defer body ...), which is
equivalent to (run-deferred (fn () body ...)), and some rudimentary support
for jumping to every card in the program:

  rake halyard:jump_each

You can skip a group or card by setting :skip-when-jumping-to-each-card?:

  (card /sample (%card% :skip-when-jumping-to-each-card? #t)
    ...)

After updating to this engine, run:

  rake halyard:update_tools

Also of interest are the new resolve-(static|running)-node methods and the
(rather kludgy) new metadata-attr.

Eric Kidd (8):
      halyard-unit: Call IDLE after each test card
      Turn the warning "Transition: way too long" into a debug message
      buildbot: Make it easier to call JUMP from the command-line
      Jumping to each card: Begin with a basic implementation
      Jumping to each card: Add 'rake halyard:jump_each' task
      config/boot.rb: Add ENV['HALYARD_RUNTIME'] to search path
      Factor metadata-attr out of card-sequence.ss
      Jumping to each card: Allow cards and groups to be skipped

Eric Kidd & Robinson Tryon (2):
      halyard-unit: Allow stopping and resuming test suites
      Add .resolve-static-node and .resolve-running-node methods

Eric Kidd & Brian Campbell (1):
      Add a (defer ...) special form

0.5.18 - 1 Oct 2008

We decided to rename "caution" to "warning", because "warning" is more
consistent with the terminology used by other interpreters and compilers.
We also improved the warning dialogs and added the unit-test macros
ASSERT-WARNS and ASSERT-JUMPS.

Several low-level APIs were exported from drag.ss to make it easier for
people doing complicated things with the drag-and-drop framework.

Note that we provide backwards-compatibility stubs for all renamed
functions.  Existing code should require the following file:

  (require (lib "deprecated.ss" "halyard"))

Once this is done, you won't need to worry about APIs deprecated in the
future.

Eric Kidd (7):
      Win32: Show "Warning" instead of "Error" in caution dialogs
      Mac: Show "Warning" and "Error" in appropriate dialogs
      TLogger: Rename "caution" -> "warning"
      mizzen: Add ASSERT-WARNS macro
      halyard-unit: Add ASSERT-JUMPS for unit-testing JUMPs
      Rename NON-FATAL-ERROR -> REPORT-ERROR
      buildbot: Force WAIT to return immediately in COMMAND_LINE mode

Eric Kidd & Brian Campbell (1):
      drag.ss: Export some more low-level drag machinery

0.5.17 - 29 Sep 2008

This release makes the CAUTION infrastructure more pleasant to deal with.
Specifically, the unit test framework now captures caution messages, and
several related engine-level problems have been fixed.

Eric Kidd & Brian Campbell (4):
      Bug fix: Don't call TLogger from interrupt level
      %invisible-element%: Do not show caution when deleted
      Treat cautions as unit test failures
      .gitignore: Ignore Quake 2 save files

0.5.16 - 26 Sep 2008

This release adds several features for making sim development more
convenitent; we add the ability to define teleport locations, along
with associated setup code, in Quake, so you can easily jump into the
middle of a sim.  See the documentation in halyard/quake2/teleport.ss
for further details.  We also fixed a bug that causes pause/resume to
break wait points on Vorbis audio streams.

We have also made several changes to support the automatic build bot,
and as part of this, we have begun showing CAUTION message dialogs in
AUTHORING mode.

Eric Kidd (6):
      Lazy loading: Improve a misleading error message
      Buildbot support: Add git:force_clean Rake task
      Move %static-node-trampoline% .responds-to? next to .method-missing
      Buildbot support: Rake tasks for full and quick build prep
      Show caution dialog in AUTHORING mode
      Make .responds-to? always return a boolean value

Eric Kidd & Brian Campbell (3):
      AudioStream: Correctly preserve samples played across pause/resume
      Quake 2: Add support for teleporting when developing levels
      FileSystem.cpp: Remove unexpected errno cautions

0.5.15.1 - 8 Sep 2008

This release is simply a build fix for the 0.5.15 release, though it 
contains a few other minor changes that went in between the 0.5.15 release
and now.  The build fix is to reduce LOG_APAGE_SIZE back down to 16, since
17 causes the engine to crash on some computers.

Brian Campbell (2):
      Decrease LOG_APAGE_SIZE to 16 after build failure
      Documentation: Update HACKING.txt to include a 'rake libs' step while...

Eric Kidd (5):
      Mac build fix: Remove __attribute__ from TLogger::ExitWithError
      Code review: Explain how script-load-error works
      Code review: Explain how ModelFormat and Migrate work
      Build: Clean up default Rake tests for script projects
      Buildbot support: Display Caution messages on console

0.5.15 - 5 Sep 2008

This release consists of many small cleanups and bug fixes.  There are a
few API changes and improvements:

  - It is now possible to refer to static nodes anywhere in the program
    as /foo/bar (instead of @/foo/bar), even if they're not in scope.
  - DEFINE/P is once again part of the public API.
  - To access the state-db, you must require it:
      (require (lib "state-db.ss" "halyard"))
  - To run test suites in a Halyard script, use:
      rake halyard:test
  - You'll want to version control ignore rules for config/cached.conf.

There is also extensive new support for running Halyard under Buildbot and
similar command-line tools.  To do access this mode, see the new
'halyard_command' function in Rake.

Brian Campbell (8):
      Unit test framework: Display errors in order they occur
      Unit test framework: Clean up leftover temporary parent elements in...
      Implement simpe static node path syntax
      Save number of files loaded to an ignroable "cached configuration" file
      Save separate file counts for lazy and non-lazy loads
      Editor: Load syntax highlighting information even when first load fails
      Code review: Fix migration code and ambiguous if statement braces
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard

Eric Kidd (12):
      Cleanup: Remove exclamation point from organization name
      Cleanup: Add test cases, comment fixes for measure-text
      Cleanup: Fix %browser% test cases to work without network
      Move state-db API into separate file
      Bug fix: Re-export define/p
      Increase LOG_APAGE_SIZE to 17 for Windows XP
      Bug fix: Clean up interactions between EXIT-SCRIPT and JUMP
      Buildbot support: Add SUCCESS? parameter to exit-script
      Buildbot support: Add support for running in command-line mode
      Buildbot support: Make errors accessible in COMMAND_LINE mode
      Buildbot support: Make test failure messages available to scripts
      Lazy loading: Don't lose track of current card after errors

William Scavone (1):
      New Halyard icons to replace the old Tamale icons

0.5.14 - 29 August 2008

Halyard now supports lazy loading!  To enable it, open a listener and type:

  (set! (lazy-loading-enabled?) #t)

Then, reload your script and keep an eye on the status bar at the bottom of
the window.  You should see messages of the form "Loaded /features."
whenever a module gets loaded.

If you think the lazy loader is getting a little too eager, and loading
huge files too soon, please see the Debug.log for details on why certain
modules were loaded.  And if you discover any bugs, please get in touch
with Eric immediately, and he'll investigate them--this code is still very
experimental.

Other interesting changes:
  - The Debug.log is back!
  - The "Open" dialog box now defaults usefully once again.
  - The (set-status-text! msg) function may be used to display debugging
    information at the bottom of the developer-mode window.  Please don't
    use this when loading code, because it will make it impossible to see
    important information from the engine.

Brian Campbell (3):
      Cleanup Rakefile and build process
      Walk up directory hierarchy to guess at appropriate current directory
      Demand loading: Code review comment updates and fixes

Eric Kidd (23):
      Demand loading: Register groups with engine, not just cards
      Demand loading: Remove extra RegisterGroupMember layer
      Fix boot.rb to work in projects with engine/src directory
      Give a better error when attempting to show an invisible Widget
      Simplify Widget::Show error-handling further
      Demand loading: Rename script-paths.ss -> external-nodes.ss
      Demand loading: Add *enable-demand-loading?* variable
      Cleanup: Make trace.ss into a private API
      Demand loading: Detect nodes declared in wrong file
      Demand loading: Implement rudimentary demand loader
      Demand loading: Add GroupItemData for mCardsID
      Demand loading: Change register-group-member parameters for clarity
      Demand loading: Make find-static-node work on external-group children
      Demand loading: Show "open folder" controls for unloaded groups
      Demand loading: Load groups when opened in GUI
      Demand loading: Detect confusion of cards and groups
      Demand loading: Prevent adding children to unloaded groups
      Demand loading: Show loading information using SetStatusText
      Demand loading: Fix crash when %kernel-valid-card? triggers load
      Demand loading: Rename to "lazy loading"
      Lazy loading: Don't save *.ss file count when lazy loading enabled
      Lazy loading: Address code review comments on ProgramTree
      Lazy loading: Rename mIsLazyLoadingPotentiallyEnabled

0.5.13 - 25 August 2008

In the past, several internal Halyard APIs have actually been exported to
the public.  In this release, we make those APIs private.  The new rule:
Anything in the halyard/ collection is a public API[1].  Anything in
halyard/private/ is for internal use only, and it may change drastically
without warning.

We also loosen up a type constraint on %BROWSER% .PATH.

If you find that you need to use APIs from halyard/private/, please let us
know, and we'll make a new release shortly.

[1] You may want to look at the top of halyard/private/api.ss for a list of
suspicious and deprecated functions.  We probably won't revist these until
Halyard 0.7.

Eric Kidd (8):
      Test fix: Make sure we actually run all Halyard test cases
      Improve error message for (@/static-node .instance-of? %node%)
      Update to latest wxquake2, with new README-WX.txt and license files
      Remove unused build configurations
      Move private *.ss files to halyard/private
      Hide private nodes.ss and kernel.ss APIs
      Allow use of PLT paths with %browser%
      Bug fix: Load built-in-identifiers.ss from correct directory

0.5.12 - 30 July 2008

This release makes several API changes intended to support demand-loading.
In particular, the file start.ss must now be wrapped in a module
declaration, and REQUIRE statements should be replaced by appropriate
EXTERNAL-GROUP and EXTERNAL-CARD statements.

For example, an old-style start.ss might look like this:

  (require (file "example.ss"))
  (require (file "example/card.ss"))

A new-style start.ss would look like this:

  (module start (lib "halyard.ss" "halyard")
    (external-group /example)
    )

The second line in the original file would move to the end of example.ss,
where it would become:

    ;; In example.ss.
    (external-card /example/card)

All non-group, non-card *.ss files should move into an appropriate
subdirectory of collects.  You should continue to load these files using
REQUIRE, as before.

Eric Kidd (4):
      Turn start.ss into a regular module
      Repository fix: Delete bogus lower-case "common/test/scripts" tree
      Implement Perl-inspired SPLIT and JOIN functions
      Add external-group and external-card forms for loading scripts

0.5.11 - 28 July 2008

This release substantially reorganizes the directory structure of a Halyard
script in several important ways.  Some highlights:

  Graphics         -> local/graphics
  Graphics/script  -> local/branding
  Graphics/cursors -> local/cursors
  LocalMedia       -> local/media
  Media            -> streaming/media
  HTML             -> local/html
  Runtime/*        -> engine/win32/runtime/collects/* (our stuff)
  Runtime/*        -> engine/win32/runtime/plt/* (PLT's stuff)
  Fonts            -> engine/win32/fonts
  *.{exe,dll}      -> engine/win32/*.{exe,dll}
  Scripts/*        -> scripts/* (groups and cards)
  Scripts/*        -> collects/$COLLECT/* (libraries)
  (temp files)     -> temp/*
  developer.prefs  -> config/developer.prefs

See http://iml.dartmouth.edu/halyard/wiki/index.php/Porting_notes for a
complete list of renamed directories.

Several minor APIs have also changed:

  1. ABSTRACT-PATH->NATIVE-PATH is no longer available (use BUILD-PATH).
  2. MAKE-NATIVE-PATH is no longer available (use RESOLVE-CONTENT-PATH, but
     be careful--it generally only works on files, not directories).
  3. Some uses of CURRENT-DIRECTORY will need to be replaced with
     RUNTIME-DIRECTORY.  Most other uses of CURRENT-DIRECTORY will need to
     be reviewed carefully.

We now provide a script-level collects/ directory, which may optionally
contain content files and Ruby support code:

  collects/$NAME/_halyard
    local/graphics    - Graphics
    local/media       - Media files
    local/*           - Etc.
    ruby/libs         - Ruby libraries
    ruby/tasks/*.rake - Rake tasks

With this layout, referring to a graphics file named $NAME/foo.png will
actually look in collects/$NAME/_halyard/local/graphics/foo.png.

Ruby code may also be stored at the top-level of a script:

  ruby/libs
  ruby/tasks/*.rake

You will want to grab a copy of halyard/test/config/boot.rb and copy it
$HALYARD_SCRIPT/config/boot.rb.  Once you've done that, you should begin
every Ruby script in your project with a line like the following:

  require 'config/boot'

Your Rakefile should also contain the following line:

  require 'halyard/rake'

Once you do this, Ruby libraries and tasks/*.rake files will automatically
be made available.

Known regression: The code which automatically decides which
application.halyard file is associated with the current engine is not
working right now.

Brian Campbell (1):
      Pass correct parameters in RECTANGLE-OUTLINE node helper

Eric Kidd (27):
      reorg: Media -> streaming/media, LocalMedia -> local/media
      reorg: Remove unused FileSystem::Get*Directory APIs
      reorg: Graphics/script -> local/branding
      reorg: Graphics -> local/graphics
      reorg: local/graphics/cursors -> local/cursors
      reorg: HTML -> local/html
      reorg: definitions.sqlite3, user.conf -> temp/
      reorg: developer.prefs -> config/
      reorg: Scripts/<libraries> -> collects/halyard-test/<libraries>
      reorg: Name files in Scripts/ after the groups they contain
      Ignore .stg-edit.txt
      reorg: Scripts -> scripts
      reorg: TestScripts -> test-scripts
      Bug fix: Don't create temp directory if it already exists
      reorg: Move Runtime/, Fonts/ to new runtime/ directory
      reorg: Remove FileSystem::GetScriptsDirectoryName
      Bug fix: Don't attempt to open user.conf without a ScriptEditor
      Test fix: Make halyard-fixtures-dir look in the right place
      reorg: Fix ScriptEditorDB to scan runtime/ directory
      reorg: Mac: Add support for new runtime/ directory location
      reorg: Update buildfile.rb to know about new layout
      reorg: Centralize TODO files in tree, and add REORG-TODO.txt
      reorg: Merge REORG-TODO.txt from Windows system
      reorg: tools/buildscript -> runtime/ruby/lib/buildscript
      reorg: Allow Halyard and collects to provide Ruby libs & Rake tasks
      reorg: Allow content to be stored in collects/*/_halyard directories
      Merge branch 'chaining'

0.5.10-chaining2 - 25 July 2008

This release fixes a few small bugs in the -chaining1 release, related to
the script editor.

Brian Campbell (3):
      Reorganize and touch up documentation in tags.ss
      Add syntax tagger for DEFPRIMCLASS, and fix tagger for DEFSUBST
      editor: Fix crash when file in saved active tab no longer exists

0.5.10-chaining1 - 23 July 2008

This release is intended for one new feature: the chaining of method 
names.  This new syntax allows us to write (object .foo.bar.baz 10)
instead of (((object .foo) .bar) .baz 10), which should make many uses
of the new syntax much more pleasant.

This is relased off of a branch, because there is significant file
reorganization occuring on master which we don't want to land until
it is done.

Eric Kidd (4):
      Allow (obj .foo.bar arg1 arg2)-style method calls
      Add command-line test driver file
      Added begin/var support to λ special form
      code review: clean up regex, add unit tests

0.5.10 - 11 July 2008

In this release, we merge the experimental sandbox branch.
Descriptions of those changes can be found in the -sandbox1 and 2
releases mentioned below.

In addition, we have rewritten the syntax highlighting and
autocompletion to work off of the same database as meta-. and the help
strings.  This means that a few things may highlight and indent
differently.  In particular, macros can no longer expand to the
DEFINE-SYNTAX-INDENT form, but instead you must include that
information in a syntax tagger as seen in Runtime/halyard/tags.ss.
Also, some functions and macros that were picked up by the old system
may be missed, but any that were can be added back in using the 
appropriate syntax taggers and define-syntax-indent forms.

Eric Kidd (8):
      buildfile.rb: Allow version numbers of the form "v0.5.9-foo1"
      buildfile.rb: Document the need to install Cygwin's zip
      Merge branch 'sandbox'
      Retain more syntax information in begin/var
      sqlite3_plus: Add an 'isnull' member function
      Store identifier and indentation information in ScriptEditorDB
      Fix assorted define-syntax-tagger problems
      ScriptEditorDB: Docs & delete indentation information when file changes

0.5.9-sandbox2 - 8 May 2008

This release fixes all known issues in the "sandbox" branch.  Particular
thanks go to Matthew Flatt, who helped us fix an out-of-memory crash during
script reloads.

Note that the engine may still crash if you try to allocate more than ~1.6G
on the Scheme heap.  This may happen if you try to compile very large
programs with errortrace turned on.  If this occurs, simply restart the
engine and try again--compilation will resume where it left off.

Eric Kidd (5):
      Increase stack size from 1000 to 64000
      Modify progress bar to work with new sandboxed loader
      Compile all *.ss files to *.zo in a single pass
      Mac: Disable compilation manager when it can't be used
      Fix out-of-memory crash during script reload

0.5.9-sandbox1 - 6 May 2008

This is an experimental release of Halyard using Eli Barzilay's sandbox.ss
module.  It should have full support for backtraces in error dialogs.

However, this release also contains at least one nasty crashing bug
in GC_mark (and/or mark_struct_val) during reloads.  To trigger it, turn on
errortrace support, delete all *.zo files, and reload the script.

Other limitations:
  * Errortrace won't work on the Mac, because you generally can't write
    to PLT's collections directory under MacPorts.
  * It takes at least two reloads to get everything properly compiled.
    We're still debugging this.
  * The progress bar is completely broken, because we're not getting
    any callbacks from cm.ss when we load an already-compiled file.

We're pushing this out as a "-sandbox1" release to allow more testing
before we merge it back to the "master" branch.

Also included is Brian's new code for saving open tabs in the editor.

Brian Campbell (2):
      Editor: Save open tabs and currently active tab
      Mention Mac build instructions in HACKING.txt

Eric Kidd (9):
      Modify loader to use sandbox.ss instead of custom code
      MacPorts: Replace bogus collects-dir value with addon-dir
      Replace wrapped load/use-compiled-handler with callback
      buildfile.rb fix: Add svn:ignore properties correctly
      Display backtraces in error dialogs
      Initialize errortrace before compilation manager
      Set up the compilation manager and errortrace in correct order
      Add support for version numbers containing "-pre" and "-rc"
      Merge branch 'master' into sandbox

0.5.9 - 5 May 2008

The memory leak is fixed!  This makes Halyard substantially more usable for
day-to-day development.  Many thanks to Matthew Flatt for debugging this
long-standing problem.

Other highlights:
  * %text-box% elements now default :clickable-where-transparent? to #f.
  * When "Show Element Borders" is turned on, element names will be
    displayed in the status bar.
  * Our tarballs now include a "./configure" script.

Eric Kidd (9):
      Ignore Xcode-related files
      Performance: Work around Swindle-related memory leak
      wxMac: Fix crash in mTree->SetItemBold
      autotools: Add autogen.sh from gnome-common
      Allow loader.ss to use (require ...) paths
      Show element names in status bar when borders are displayed
      Run ./autogen.sh before making release tarballs
      Ignore "compiled" directories when releasing to Subversion
      Build fix: Insert missing semicolon

0.5.8 - 1 May 2008

This version of Halyard features significantly improved Mac support.
The following features now work:

  * The script editor (except for search and replace)
  * QuickTime (although the Mac VP3 codecs have issues)
  * Error dialogs
  * Toolbar icons (although some disappear when clicked)

Also of note:

  * The Windows engine now uses FreeType 2.3.5.
  * The QuickTime layer has been partially restructured, and is now
    compiled against the QT 7.3 SDK instead of the QT 6 SDK
  * We export %pref and set-%pref! from data-file.ss to work around macro
    hygiene issues.
  * There is now a centralized benchmarking card in halyard/test.
  * Type-checking of mizzen objects is now much faster.

Please keep your eyes open for any regressions, and let us know if you find
any.

Brian Campbell (13):
      wxMac: Add Xcode project for debugging Halyard
      Update Makefiles to support building in separate directories
      paths: Remove extraneous debug statements
      Add benchmarks for different types of elements
      wxMac: Fix assertion failure when creating 0-area DrawingArea
      wxMac: Fix assertion failure when drawing elements partly off-screen
      wxMac: Wrap strings in wxLogTrace calls appropriately
      Properly convert from wxChar * to char * in AppLog
      wxMac: Update the script editor to work with vanilla wxWidgets 2.8
      Fix browser test cases that fail on wxMac
      Export %pref and set-%pref! from data-file.ss
      Increase toolbar bitmaps to 16x16 pixels, and fix icon transparency
      Convert toolbar bitmaps and editor icons to XPMs

Eric Kidd (25):
      autotools: Enable precompiled headers
      QuickTime: Move TQTPrimitives into TQTMovie and reorganize
      Merge branch 'portability'
      Replace /performance/dispatch card with interface to benchmark suite
      wxMac: Merge APP_PLATFORM_MACINTOSH with APP_PLATFORM_OTHER
      Update application.halyard
      Update to modern wxConfigBase API
      wxMac: Enable CONFIG_LOCATION_BOX_IS_COMBO
      Performance: Optimize %class% .subclass-of?
      Win32 build fix: 'and', 'not', incorrect __WXWIN__ conditional
      Use non-consing form of hash-table-get when possible
      GC bug fix: Actually register variables and arrays correctly
      Performance: Warn if we're leaking TSchemePtr objects
      Build fix: Don't call wxBitmap::IsOk() under wxWidgets 2.6
      Warning fixes: Clean up VorbisFile.cpp under MSVC++
      Move GUI error-dialog code into HalyardApp
      wxMac: Implement portable error dialog
      QuickTime: Upgrade to QT 7.3 SDK and remove FSSpec code
      QuickTime: Initial Macintosh support
      wxMac: Always use full-width hex strings for colors
      Warning fix: Manually convert result of scheme_eq to bool
      autotools: Make ./configure issue an error if we're missing libraries
      FreeType: Upgrade to v2.3.5 on Win32
      Build fix: Correct dependencies for FreeType
      Performance: Add benchmark for calling a primitive

0.5.7 - 22 April 2008

This release includes a highly-experimental port to Mac OS X.  Video,
audio, transitions and the script editor don't work yet, but much of the
core engine now runs.

Brian also has begun work on a new path system.  So far, this requires two
changes to existing code:

 1) Card and group names now begin with "/".
 2) You may unambiguously refer to a path using an absolute name.
    For example, "@index" still searches for the nearest node named
    "index" (using the standard acquisition rules), but "@/index" will
    always find the top-level card named index.

This is just the start of the new path system; expect the rest of the of
changes in the next release or two.

Also of interest: (jump-current) now actually calls (jump ...).

Brian Campbell (11):
      paths: Update node full names to include leading slashes
      paths: Add unit tests for existing path system
      paths: Add support for absolute paths, beginning with /
      buildfile.rb: Re-apply changes from 347d6dc6b6
      buildfile.rb: Make gpgv.exe executable
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard
      Merge branch 'master' into paths
      wxMac: Fixes to compile against Leopard-bundled wxWidgets
      wxMac: Clear stage background before displaying splash screen
      paths: Fix .resolve-path errors to actually mention the path name
      Merge branch 'paths'

Eric Kidd (41):
      autotools: Add autoconf macros for finding wxWidgets
      autotools: Check for presence of wxWidgets and create empty Makefile
      autotools: Rename TestAll to CommonTest for consistency with Windows
      Add CommonTest to .gitignore
      wxMac: Start modifying code to build with wxMac 2.8 Unicode
      wxMac: Regenerate *.xpm files from *.ico and *.bmp files
      wxMac: Compile CustomTreeCtrl and DirtyList
      wxMac: Compile wx/src/dlg subdirectory
      wxMac: Compile DocNotebook and Downloader
      wxMac: Compile DrawingArea
      DrawingArea: Move conditional code into top-level functions
      wxMac: Compile DrawingAreaOpt
      wxMac: Compile remaining classes beginning with "D" and "E"
      wxMac: Start work on FancyCrashReporter
      wxMac: Start work on HalyardApp
      wxMac: Compile FancyStatusBar, GuiUtil and HistoryText
      wxMac: Compile classes beginning with "I" and "L"
      wxMac: Compile MediaElement, MovieElement and MovieWindow
      wxMac: Compile Overlay, ProgramTree and SashFrame
      wxMac: Compile Stage, StageAccessible and StageFrame
      wxMac: Compile TestHarness, Timecoder, ToolWindow, Transition
      wxMac: Compile TWxPrimitives
      wxMac: Compile Widget and Zone
      wxMac: Breaks link: Start trying to link Halyard
      wxMac: Compile application.xrc
      wxMac: Conditionalize FancyCrashReporter and BrowserElementIE
      wxMac: Conditionalize ScriptEditor
      wxMac: It compiles! (But it doesn't run.)
      wxMac: Preliminary sketch of event loop
      wxMac: Don't set Stage background before Create()
      wxMac: Call wxEventLoopActivator correctly
      wxMSW build fix: Preprocessor definitions and const removal
      wxMac: Only use new event loop on tested platforms
      wxMac: Create proper bundle directory (and it runs!)
      Remove "Show Debug Log..." menu item
      wxMac: Use standard menu item IDs
      autotools: Require wxWidgets 2.8.7
      Build fix: Replace HALYARD_EXIT with wxID_EXIT in ScriptEditor
      wxMac QuickTime: Move uint32, etc., into Halyard namespace
      Build fix: Convert remaining int16 -> Halyard::int16
      Make (jump-current) actually call (jump ...)

0.5.6 - 17 April 2008

This build fixes a number of serious issues in 0.5.5:

  * The last release failed to build, because certain essential PLT
    libraries were not copied from libs/plt/collects to test/Runtime.
  * When a script failed to load, it left behind dirty internal state in
    TSchemeInterpreter, causing subsequent reloads to fail with an error in
    DefStyle.

This build addresses both those bugs, and puts into place new tools to
prevent future mistakes of this sort:

  * When making a build, we now run all of our unit tests, including both
    those in CommonTest, and the various %test-suite% cards in
    halyard/test.
  * It is now possible to make test builds without tagging a release.  Type
    "ruby -I tools/buildscript buildfile.rb <committish>" to make a build.
    Here, <committish> can either be a version number like "v0.5.5", a
    branch name like "master", or an SHA1 name.

To run the GUI-based unit tests from the command-line, type:

  cd test
  ../../Win32/Bin/Halyard_d.exe -e "(command-line-test-driver)" .

We also now provide a single, centralized "tests" sequence containing all
the automatic test cards in the program.  API changes include:

tests:
  This is a new top-level sequence which you should use as a parent for
  all %test-suite% cards.  To populate this with a set of standard tests,
  require (lib "tests.ss" "halyard").

run-all-test-suites:
  Call this function to run all the cards in "tests".

tests/run-all:
  Click on this card to call run-all-test-suites.

fixture-dir -> halyard-fixture-dir:
  This function only works for code in Halyard module, so rename it
  appropriately.

$mizzen-tests:
  All the test cases defined by mizzen.

Eric Kidd (12):
      Update buildfile.rb for use with PLT v372
      Rakefile: Include PLT's net, planet and xml collections
      Put all test suites under "tests/" sequence and rationalize
      Report SchemeStructToTValue failures sooner
      Bug fix: Clear bucket map properly after a failed reload
      Support for running unit tests from command line
      Test fix: Restructure CommonTest to always have a TSchemeInterpreter
      Bug fix: Change default value of *running-all-tests?* to #t
      Rakefile: Run all cards in "tests" as part of test suite
      buildfile.rb: Support building from arbitrary tags
      Build fix: Use global $untagged_build variable in buildscript.rb
      Test fix: Use absolute paths when setting up interpreter

0.5.5 - 15 April 2008

[This build has a number of bugs, and we never released binaries for it.]

This version of Halyard is based on PLT Scheme v372, and uses the new 3m
garbage collector.  No major script-level changes should be necessary.
However, you must do several things:

  * Make sure that you no longer have libmzgc2*.dll or libmzsch2*.dll
    in any of your programs.  These files are obsolete.
  * Delete any compiled/ directories from 0.5.4 or earlier
  * If you're running halyard/test, make sure that you only have two
    subdirectories in test/Runtime: mizzen and halyard.  You can delete
    other directories by running 'make clean_scheme'.  Forgetting to clean
    up these directories will make the engine crash as soon as you try to
    open a script.

Peformance has improved 50-200% on various benchmarks, and we hope to do
even better in future releases.

Other major highlights include a bundled copy of the build system (in
tools/buildscript) and support for building all of halyard/Common under Mac
OS X using MacPorts.

Brian Campbell (10):
      buildfile.rb: Use svn+ssh URLs instead of https for tagging binaries
      test: Remove broken and inappropriate test cases
      Fix HACKING.txt to include correct command for pushing tags and master
      ax_lib_mzscheme: Detect PLT installed via MacPorts
      buildfile.rb: Don't include compiled directories in SVN checkin or ZIP
      Add buildscript as a submodule
      Remove deprecated TEST-ELEMENTS features
      Change Tamale->Halyard in animate-doc.txt
      HACKING.txt: Correct build instructions
      loader.ss: Add more extensive comments on the path setup

Eric Kidd (39):
      autotools: Add macro to check for PLT Scheme libraries
      Fix nasty GC leak in TSchemePtr.h
      Build Common/lang/scheme (not yet linkable with gcc, though)
      ax_lib_mzscheme: Use -F for framework search path, not -L
      ScriptEditorDB: Get current time correctly in test case
      Disable TRUST-PRECOMPILED support before upgrading PLT
      Common: Build lang/scheme and re-enable all test cases
      autotools: Make sure we build all of Common
      Test case fix: Attempt to find a portable way of updating timestamps
      Build fix: Make ScriptEditorDB use native_file_string
      Breaks build: Modify configure.ac to look for PLT v372
      Untested: Rewrite TSchemePtr to use scheme_malloc_immobile_box
      PLT v372: Make the code compile (but not actually work)
      TSchemePtr: Add documentation suggested in code review
      Pass __gc_var_stack__ to scheme_set_stack_base
      Add an experimental C++ API for interfacing with PLT's precise GC
      Explain GC safety assumption made by TSchemePtr's constructor
      Begin converting code to use new GC API
      FindBucket: Use stable identifiers with std::map, not movable pointers
      Document all the patches we had applied to PLT v360
      TSchemeReg: Fix assertion that checks value of mOffset
      Make TSchemeInterpreter::Eq call scheme_eq
      Remove in-tree copies of standard PLT collections
      Look for PLT collections in standard locations
      Document interaction between scheme_signal_error and MZ_GC_UNREG
      Document difference between SCHEME_SYM_VAL and SCHEME_BYTE_STR_VAL
      Fix symbol-name lookup bug ('make check' now runs!)
      Makefile: Add 'make stress' target to test PLT v372
      Switch libs/plt to v372
      Search for standard PLT library collections in several places
      PLT v372: Rudimentary support for building with MSVC++
      Benchmarking results: 50% to 200% faster than PLT v360
      application.halyard: Update number of files in project
      Build PLT v372 using MS Visual Studio
      Re-enable compilation of *.ss files
      Merge branch 'plt-v372'
      Rakefile: Add clean_scheme target
      Restore support for trusting precompiled *.zo files
      Portability: Test for always-treat-zo-and-so-as-newer correctly

0.5.4 - 9 April 2008

Eric has begun work to port Common to g++ under Mac OS X, using
MacPorts libraries and GNU autotools.  This work should also be
relevant for any future Linux porting work.

Other work:
  * Make halyard-test run again (bug introduced in 0.5.3)
  * Migrated to Git
  * Updated build system for Git
  * Break release tarballs into source, libs, and media
  * Benchmarking libraries for mizzen
  * Replace Ogg Theora test card with "Duck and Cover" version

Brian Campbell (6):
      Rakefile: remove tag AS=x.y.z command
      Add mizzen unit tests to command line test runner
      buildfile.rb: Add support for doing builds from Git
      Update HACKING.txt to reflect current Git workflow and build procedure
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard
      Merge branch 'master' of ssh://imlsrc.dartmouth.edu/var/lib/git/halyard

Eric Kidd (32):
      Make halyard-test run again
      Ignore "compiled" directories
      autotools: Update to modern versions, and build libs/sha1
      Make CommonHeaders.h compile with GCC
      autotools: Add macros from autoconf-archive
      ax_boost_filesystem: Switch to C++ before calling AC_CHECK_LIB
      autotools: Check for some of the libraries we need
      autotools: Add macro to check for __attribute__ support
      Common: Some unit tests now pass on MacOS X
      Common: Build TTextTransform, Typography, TVectorDiff, TStyleSheet
      Common: Build CaptionList and TTextConv
      Common: Build TDeveloperPrefs and CommandLine
      Build fix: Replace preprocessor error in CommandLine.cpp with exception
      autotools: Some more notes on the libraries and versions we need
      Common: Make TestAll run on MacOS X with some tests disabled
      Common: Small portability fixes for TValue.cpp
      Added 'make check' target to run TestAll
      autotools: More version information for libs/
      Benchmarking library for mizzen
      Add tools/git-ls-submodules
      application.halyard: Update number of Scheme files in test script
      Add Ogg versions of "Bert the Turtle" and "Quackery" videos
      Add standard .gitignore entires to submodules
      Replace Ogg Theora test card with "Duck and Cover" version
      Replace implicit TValue conversions with tvalue_cast<T>(...)
      g++: Specialize tvalue_cast<T> from within Halyard namespace
      Update HACKING.txt for current git setup
      Remove REGISTER_PRIMITIVE forward-declaration grik
      Common: Build files depending on TValue.cpp
      autotools: Build libs/sqlite3-plus
      Common: Build ScriptEditorDB.cpp and fix non-virtual destructor bugs
      Rough draft of a CREDITS.txt file

0.5.3 - 3 April 2008 - brian, emk, tryon

[This build has a number of bugs.  In particular, halyard/test does not
run.]

In this release, we break our object model out into its own collection, 
mizzen.  This allows it to be run in MzScheme or DrScheme, independent of 
the engine.  This shouldn't affect script level code at all, but it means
that the Runtime/halyard code is slightly rearranged.

  * (lib "language.ss" "halyard") -> (lib "mizzen.ss" "mizzen")
  * In many cases, util.ss no longer needs to be required, as it 
    is provided by default by mizzen.ss.
  * You can run mizzen code in MzScheme or DrScheme by ensurign that 
    mizzen is in your collections path, and creating modules using 
    the language (lib "mizzen.ss" "mizzen").
  * There is now a text-based test runner, that you run by calling
    (run-tests (list %test1% %test2%)).

  mizzen: Add a bare-bones README.txt
  mizzen: Use relative paths instead of library paths in includes
  mizeen: Rename language.ss to mizzen.ss
  Runtime: Addd prologues to scheme files in halyard and mizzen
  mizzen: Update fix-prologues.pl to understand Scheme files
  mizzen: Add a copy of the LGPL to mizzen direcotry
  mizzen: Add text mentioning mizzen in LICENSE.txt
  mizzen: Build and release a mizzen tarball
  Move ruby-objects documentation diagrams to mizzen folder
  mizzen: Move ruby-objects-test.ss into mizzen
  mizzen: Move unit test system test cases into mizzen
  mizzen: Text-based test case runner
  mizzen: Split unit test system into mizzen and halyard components
  mizzen: Move FN from halyard/api.ss to mizzen/util.ss
  mizzen: Provide various utilities from language.ss
  mizzen: Revert Swindle provide patch, moving provide swizzling into mizzen
  miszen: Move ruby-objects.ss, language.ss, and dependencies into mizzen
  mizzen: Split util.ss into engine dependent and independent portions

Sequencing of cards has been completely redesigned.  This is a work in 
progress, and further changes are to be expected  in the next release.

  * There are no longer separate GROUP and SEQUENCE declarations;
    whether or not something is a sequence is a class variable (which
    means it can also be set on the static node).
  * Groups default to being ordered, but you can specify that they are
    unordered by passing :ordered? #f when declaring them.
  * The algorithm for computing next and previous cards has also
    changed.  It should now be more robust, and be able to handle
    empty sequences.
  * You can now call .card-next and .card-prev on any static or
    running card, to find the next or previous card that should be
    jumped to.

Examples:
      (sequence foo/bar/baz (%bing%)) -> (group foo/bar/baz (%bing%))
      (group foo/bar/baz (%bing%)) -> (group foo/bar/baz (%bing% :ordered? #f))

Substitutions you will need to make when porting:    
      sequence -> group
      %card-sequence% -> %card-group%
      card-sequence? -> card-group? + .ordered?

  Rewrite .FIND-NEXT & .FIND-PREV on %card-group% using new support code
  Add methods to %group-member% to return flattened lists of group members
  Adding pass-through methods for .card-next and .card-prev
  Add .card-next and .card-prev as methods on the static %card% class
  Merge %card-sequence% into %card-group%
  card-sequence.ss: Remove local wrapper functions

Halyard has switched to a standard of always using LF delimited lines,
instead of some files being LF delimited and some being CRLF
delimited.  The Scintilla editor has been updated to handle this
appropriately, and we have added scripts for audition to ensure that
no files wind up with a mix of line endings.

  Fix line endings in test-elements.ss
  Convert CRLF to LF where obviously safe
  Run checkfiles in tools directory
  Fix files with mixed CRLF / LF endings
  Default to using LF line endings in empty buffers
  Automatically convert all line endings to consistent style when saving
  Add line-ending style detection to script editor
  Script to call checkfiles for our *.ss, *.cpp and *.h files
  Fixed inconsistent EOL characters in nodes.ss
  Add tools/checkfiles, which performs style checks
  Strip extra CR characters from halyard-unit-test.ss

Add a new mechanism for writing unit tests involving elements.  
  * %element-test-case% class for tests involving elements
  * %element-test-suite% card class for running tests involving elements,
    including an interface for pulling up the elements created by one 
    test at time.
  * TEST-ELEMENTS is now deprecated, and will be removed in the next release.

  Add test case for .RUN-TEST-METHOD-INNER
  Better bounds for temporary element parent in %element-test-case%
  Factor BELOW and TO-THE-RIGHT-OF into elements.ss
  Allow interacting with unit test elements manually
  Move TEST-ELEMENTS and support into separate file

Add a simple API for proxying initializer keywords and methods to a child
element:
      (define-class %foo-wrapper% (%box%)
        (proxy-initialize-and-methods foo %foo%)
        (setup
          (.add-child-initializer! :message "Hello, world!")
          (.create-child-element)))

And a few helper methods:
      symbol->keyword        Convert 'foo to :foo
      setter-name?           Return true for symbols of form 'set-foo!
      setter-name->keyword   Convert symbols of form 'set-foo! to :foo
      rect-shape             Eqv to (move-rect-left-top-to r (point 0 0))

  Code review cleanups for child element proxying
  Proxy initializer keywords and methods to child elements

Switched to using SYNTAX-PARAMETERIZE to handle SELF and SUPER instead of 
the old MAKE-CAPTURE-VAR/ELLIPSES system.  This has two main effects:
  1) It makes it much easier to define macros that expand into METHOD
     declarations attached to a particular object.  Instead of having 
     to use SYNTAX-CASE and MAKE-SELF, you can simply write the obvious
     SYNTAX-RULES expansion.
  2) It is possible to accidentally shadow SELF without realizing it.
     If you write the following:
       (let [[self 'hello]] 
         (instance-exec foo (method () (send self 'bar))))
     you will get an error, as it will be trying to send a message to
     'hello, not foo.  SELF is only ever bound in the top level, and
     while METHOD parameterizes it at expansion time to a different
     value, if the original binding is shadowed (as in the example),
     you will still only see the inner binding.

  Use SYNTAX-PARAMETERIZE to 'bind' SELF and SUPER instead of MAKE-SELF
  Fix TEST-ELEMENTS to have the appropriate SELF in scope

Several bugfixes in the Scintilla lexer and auto-indenter.

  editor: Start lexing at line boundaries when indenting
  Lex selection before auto-indenting
  Fix Scintalla off-by-one error when lexing |#

Various build and Git cleanups.

  Add ignore lines for gpgv.exe, baseq2 and testq2, and gc.log
  Refactor .gitignore to speed up 'git status'
  Rakefile: Removed fallback code for missing termios
  Remove $(WXWIN) environment variable

Rename and open-source release cleanup.

  Replace outdated LICENSE.txt and README in halyard/test
  Remove last remaining reference to 5L from test/Runtime/halyard
  Rename 5L-Loader -> loader
  Rename #%fivel-engine -> #%engine-primitives

Bug fixes.

  Allow whitespace-only strings to be drawn into 0-width boxes
  Fix failing errortrace test case

0.5.2 - 17 March 2008 - emk, brian

  * F#3028: Port unit test system to new object model. 
    - (define-test-case <foo> () ...) -> 
      (define-class %foo% (%test-case%) ...)
    - [[slot1 val1] [slot2 val2] ...] -> 
      (attr slot1 val1 :writable? #t)
      (attr slot2 val2 :writable? #t) ...
    - (slot-name self) -> (.slot-name)
    - (setup ...) -> (setup-test ...)
    - (teardown ...) -> (teardown-test ...)

0.5.1 - 12 March 2008 - emk, brian

  * F#1856: Further rename work, including:
    - tamale-unit.ss is now halyard-unit.ss.
    - Fixed name in LICENSE.txt to refer to Halyard.
    - Various other edits to Halyard in strings and comments.
  * F#2620: Renamed SEND% -> SEND, exported it, and removed .SEND.

0.5.0 - 11 March 2008 - tryon, emk, brian

Renaming Tamale to Halyard (F#1856):

  * The executable Tamale*.exe is now Halyard*.exe.
  * The string "TamaleProgram" in data.tam should now be "HalyardProgram".
    You'll need to update this in three places manually.
  * The file data.tam has been renamed to application.halyard.
  * The file 5L.prefs has been renamed to developer.prefs.
  * The file tamale.el has been renamed to halyard.el.
  * The directory Runtime/5L has been renamed to Runtime/halyard.
    - The file tamale.ss has been renamed to elements.ss.
    - The file 5l.ss has been renamed to halyard.ss.

Individual changes:

  * F#1341: Cleaning up caution statements to Debug.log by correcting types on
    several primitives.  String arguments passed in as symbols will now throw
    an error.
  * F#963: Fixed infinite-recursion in to-string when reporting an
    "unexpected node property initializer" message.  Also added some other
    protective code.
  * F#1390: Implemented .SEAL-METHOD! and .UNSEAL-METHOD!, which are used
    to prevent accidental overriding of ATTRs.
  * F#2116: Refactored ATTR so that we can override getter and setter
    behavior without messing around with unsealing/resealing.
  * F#1402: Factored out various checks from the standard setter method so
    they can be reused more easily.
  * F#1390: Made ATTR raise an error if it will clobber any methods that are 
    already defined.
  * F#1390: Do not allow ON handlers to be defined twice at the same level.
  * F#1980: Add meta-. support for ruby-style classes.
  * F#2518: Moved tamale_test into 5L/test.  Note that this means we'll
    need to update various 'rake copy_runtime' targets in other projects.
  * Added support for iterating over assoc lists using
    (FOREACH [(CONS k v) alist] ...).
  * Added a reload timer to the Tamale GUI.
  * F#2207: Fixed the ScriptEditorDB to not scan .svn, CVS or compiled
    subdirectories of the source tree.
  * F#2207: Fixed the ScriptEditor to update the ScriptEditorDB only 
    once per reload, rather than once per reload per tab.  This also means
    that when opening a new tab, it doesn't rescan, so opening new tabs
    is faster.
  * F#2207: Optimized ScriptEditorDB update scan.
  * F#2211: Removed ancient WITH-HANDLERS statement left over from r11673,
    where Brian was fixing the restricted user account on XP support to
    give a more useful error (and hard-quit the engine). This code is no
    longer needed since we added support for Vista.
  * F#1360: Deleted extra (IDLE) in %kernel-run that caused occasional
    bogus card repaints.
  * F#2868: Removed ELEM-OR-NAME hack and deprecated.ss.
  * F#1909: Deprecated old WAIT function (with a :FRAME keyword argument)
    in favor of new .WAIT function (with an optional FRAME argument).  This
    makes it possible to create proxy objects wrapping a movie.
  * F#979: MOUSE-ENTER and MOUSE-LEAVE are now sent only during event
    processing, and not during element creating and deletion.  This is
    accomplished by delaying the recalculation of the current element.
    Note that this change may have programmer-visible consequences!
    There's some risk here, because this is a far-reaching change, and
    5L/test may not stress every possible corner case.
  * F#1375: Added CHAR events to %edit-box%, and provided a very
    primitive protocol for handling tab order.
    - Added EVENT-MODIFIERS-AND-CHARACTER to make it easier to match
      specific key command sequences.
    - Backported a tab-handling fix from HEAD of wxWidgets.
  * F#2869: Deprecated NODE-FULL-NAME in favor of .FULL-NAME method.
  * F#2869: Separated out the path code into paths.ss.
  * F#2886: Fixed .FIND-ELEM and ELEM helper accessor to not use relative
    searches when the elements can't be found.
  * F#2901: Split off CARD-NEXT, CARD-PREV and %SEQUENCE% into a separate
    file to make them easier to redesign and clean up.
  * F#2316: Send .IDLE messages to all elements, even if they are nested 
    within other elements.
  * F#2202: Removed < and > from editor's list of brace characters.
  * F#2993: Added better error reporting for bad number of arguments
    passed to a method.
  * F#2830: Added backtrace support using PLT's errortrace library.
    This slows the engine down considerably, so it is toggleable from
    the developer interface.  There is a bug button that when
    selected, will cause the next reload to use the errortrace
    compiler.
  * F#2993: Include method names of methods not defined with DEF in
    arity errors.
  * F#2993: Include method names and appropriate arity error information
    for methods that are called using INSTANCE-EXEC or modified using 
    ADVISE.

Massive restructuring on the node system, to take much better advantage of
ruby-style classes (F#928):

  * Removed DEFINE-ELEMENT-TEMPLATE, DEFINE-CARD-TEMPLATE, etc, in favor
    of just DEFINE-CLASS.
  * Changed syntax of CARD, GROUP, SEQUENCE, etc., to be a thin wrapper
    over DEFINE-CLASS.
  * Removed CREATE in favor of .NEW.
  * Removed ON in favor of DEF, including:
    - Add support for automagic registration of expensive events and mouse
      events on DEF.
    - DEF handlers do not propagate by default!  Only predefined events
      continue to mimic the old behavior.
    - ON PROP-CHANGE has been removed, in favor of ordinary setter
      attributes.
  * IDLE events no longer take a (useless) parameter.
  * Removed various forms of SEND and PROP.
  * Split the existing node "run body" phase into separate SETUP and RUN
    phases.  The former creates child elements, etc., and the later does
    things like playing movies that we would not actually want to happen in
    a future GUI editor.
  * It is now mandatory, when overriding SETUP, SETUP-FINISHED, RUN, and
    EXIT, to call (SUPER).  This is enforced by the runtime.
  * Changed %nocreate protocol on %custom-element%.  See the source.
  * The :SHAPE argument of %CUSTOM-ELEMENT% _must_ have an origin of 0,0.
    If you want the old behavior, use :BOUNDS instead.
  * Added new (SHAPE width height) function which calls (RECT 0 0 width
    height), for use with :SHAPE initializers (just to keep the code clean).
  * Added ADVISE special form, which works in a fashion similar to Lisp's
    DEFADVICE, but for object methods in ruby-objects.ss.
  * F#2368: Turned report-test-results into an object method so it can
    be overridden by code that wants to know whether the tests succeeded.
  * Updated tamale.el to syntax highlight and indent the new object model
    reasonably well.
  * Added AFTER-UPDATING macro which can be used to run a snippet of code
    whenever any one of several slots change.
  * Refactored event-handling code from nodes.ss to events.ss.
  * Added %node% .ALWAYS-PROPAGATE function which can be used to set up
    event-like propagation.
  * Added %node% .PROPAGATE function which can propagate one-off
    command-style messages without having to modify the methods on %node%.
  * Added %basic-button% .BUTTON-STATE, which returns the state symbol
    needed by .DRAW.
  * Added macros SETUP and RUN to abbreviate the common DEFs.  These macros
    also include SUPER, to prevent the common error of leaving it out.
  * F#2517: Made SAFE-TO-STRING and %node% .INITIALIZE more robust in the
    presence of INITIALIZE methods which forget to call SUPER.
  * Added HAS-SLOT? macro for use within Ruby-style objects.
  * Added support for passing ":foo"-style keyword initializers to CARD and
    other macros, like before.
  * F#1392: Implemented nested ELEM form that can be used to
    statically-declare elements on a node.  This means that far fewer calls
    to SETUP will be needed.
  * F#1392: ELEM now declares helper methods for accessing the elements it
    creates.
  * Replaced DRAW-BUTTON with DRAW + BUTTON-STATE combo on %basic-button%.
  * Added support for :COMMAND to %basic-button%.  Feel free to use either
    :COMMAND or CLICK as suits your fancy.
  * F#2619: Added a DEFINE-NODE-HELPER function which abbreviates ELEM
    forms and their keyword arguments.
  * F#2619: Added %RECTANGLE-OUTLINE%.
  * F#2619: Added element definition helpers: BOX, CLICKABLE-ZONE,
    TEXT-BOX, TEXT, GRAPHIC, RECTANGLE, RECTANGLE-OUTLINE, SPRITE, BROWSER,
    EDIT-BOX, GEIGER-AUDIO, SINE-WAVE, VORBIS-AUDIO and MOVIE.
  * Added .INITIALIZE-SLOT as a convenient way to set up initialization for
    a bare slot.
  * The %ANSWER% class now uses a standard DRAW method.
  * Added FIND-ELEM to node to make it easier to find child elements that
    are not created using ELEM.
  * Removed:
    - LOAD-PATH-INTERNAL on %browser%
    - F#2320: EXTENDS-TEMPLATE? backward compatibility glue
  * Renamed:
    - ON SET-VOLUME! -> .SET-CHANNEL-VOLUME! on %movie%
    - POLYGON-BOUNDS -> POLYGON-BOUNDING-BOX
    - BOUNDS -> BOUNDING-BOX
    - ON BOUNDS -> .BOUNDING-BOX on %element%
    - .BOUNDS -> .DRAG-BOUNDS on %simple-draggable-object%
    - ATTR-VALUE -> VALUE
    - ATTR-DEFAULT -> DEFAULT
    - ON BUTTON-CLICKED (event) -> DEF (CLICK) on %basic-button%
    - BOX -> NEW-BOX
    - CLICKABLE-ZONE -> NEW-CLICKABLE-ZONE
    - TEXT-BOX -> NEW-TEXT-BOX
    - TEXT -> NEW-TEXT
    - GRAPHIC -> NEW-GRAPHIC
    - RECTANGLE -> NEW-RECTANGLE
    - RECTANGLE-OUTLINE -> NEW-RECTANGLE-OUTLINE
    - SPRITE -> NEW-SPRITE
    - BROWSER -> NEW-BROWSER
    - EDIT-BOX -> NEW-EDIT-BOX
    - GEIGER-AUDIO -> NEW-GEIGER-AUDIO
    - GEIGER-SYNTH -> NEW-GEIGER-SYNTH
    - SINE-WAVE -> NEW-SINE-WAVE
    - VORBIS-AUDIO -> NEW-VORBIS-AUDIO
    - MOVIE -> NEW-MOVIE

0.4.7 - 20 Dec 2007 - emk, brian

  * F#1145: We added support for clipping around movies and other
    heavyweight elements during Stage redraws, and during transitions.
  * F#940: Turn on wxCLIP_CHILDREN for StageBackground so we don't 
    redraw the background color before redrawing the screen, which 
    causes black flashes in full screen mode.

0.4.6 - 6 Dec 2007 - emk

  * F#1107: The UpdateInstaller now tries to cope with locked source files
    during the update.  This is an attempt to work around some
    occasionally-seen problems on Vista.

0.4.5 - 5 Dec 2007 - emk

Making this release earlier than planned, mostly so that I have new *.exe
and *.dll files to help debug the updater problems in F#1107.

  * F#888: Include correct updater log in crash report.  In general,
    the patch for F#888 was pretty broken.

0.4.4 - 3 Dec 2007 - emk

  * F#1108: Fixed UpdateInstaller to launch from correct directory.

0.4.3 - 2 Dec 2007 - emk

More updater improvements.

  * F#878: Made DOWNLOAD-VERIFIED have the same overwrite behavior
    as DOWNLOAD, to fix a bug where an aborted update would prevent future
    updates from running.
  * F#889: Disabled logging in UpdateInstaller.exe during uninstallation.
  * F#1002: UpdateInstaller checks for bogus target directory.
  * F#879: Support for changing the official name of the program without
    changing the name of the directory where it stores preferences.
  * F#888: Added a SCRIPT-USER-LOCAL-DATA-DIRECTORY, and modified the
    updater to use it.  This will keep us from storing huge files in a
    user's roaming profile.
  * F#1028: Added engine version number to update installer.
  * F#1026: Show a more appropriate message dialog if the update fails.

0.4.2 - 1 Dec 2007 - emk

Preliminary support for digital signatures in the updater.

  * F#876: Fixed caption on "Update Installed" window.
  * F#878: Added GPG-SIGNATURE-VALID? function which calls out to
    a gpgv.exe file to perform signature validation.
  * F#878: Added SHA1 library from
    http://xyssl.org/code/source/sha1/ .
  * F#878: Added SHA1-FILE function in updater.ss.
  * F#878: Check signature on downloaded release.spec.
  * F#878: Check integrity of MANIFEST.* files.
  * F#878: Check integrity of content files in update.

0.4.1 - 30 Nov 2007 - emk, brian

  * #4779: Workaround for inappropriate calls to mouse-enter/mouse-leave:
    Don't try to redraw custom elements that don't exist.
  * F#857: Restored loading progress bar when TRUST-PRECOMPILED is present.
  * Added preliminary TortiseSVN bug tracker integration (svn properties
    only).
  * Fix reading in of data files that are corrupted so we don't crash the
    program and we still parse any valid lines after the corrupted line.
  * F#876: Converted UpdaterInstaller from command-line program to standalone
    Win32 program.  There is still more work to be done here--the progress
    bar and error dialogs aren't hooked up yet--but it passes all our test
    suites.
  * F#876: Hooked up progress bar and error dialogs in UpdaterInstaller.
  * F#877: For security and correctness reasons, the udpater no longer
    relaunches the application under Vista.
  * F#876: Fixed new UpdateInstaller project to statically link against C
    runtime.
  * F#949: Include release.spec and updater log (if they exist) in
    crash reports.
  * F#949: UpdateInstaller now uses lock file when modifying the
    destination directory.
  * F#949: The engine now checks for the updater lock file before it
    attempts to load the script, and gives a nice error message.  This
    won't help if the engine is corrupted by an update, but it will help
    with broken scripts and users who relaunch the engine too quickly.

0.4.0 - 14 Nov 2007 - emk

  * Added support for signing the *.exe and *.dll files produced by the
    build process.
  * Removed "(Development)" flag from version number.  This is now
    a release engine.

0.3.20 - 13 Nov 2007 - emk

  * Do not attempt to run updater from restricted pre-Vista accounts, but
    do always run it on Vista.  Added back old DIR-WRITABLE? function as
    UNSAFE-DIRECTORY-WRITEABLE?, with a warning message to be very careful
    about using it only on non-Vista systems.

0.3.19 - tryon, emk

IMPORTANT: You must manually delete all compiled/ directories when
upgrading to this engine--we had to modify PLT's startup.ss, which breaks
anything compiled under the old version of startup.ss.

  * Removing tabs from tamale.el. Updating indentation for new functions.
  * Adding syntax WITH-TEMPORARY-PARENT
  * Adding form TEST-ELEMENTS to unit-testing framework.
  * The %BROWSER% element now has a SET!able location property.
  * CHECK-FILE now calls ERROR rather than THROW.
  * #4406: THROW replaced with ERROR everywhere except kernel.ss, where it 
    has been renamed ERROR-WITH-EXTRA-DIALOG.
  * #4418: Making the PATH property on %GRAPHIC% settable.
  * Adding a more descriptive error message to %CLASS%.DEFINE-MESSAGE.
  * ASSERT-RAISES-MESSAGE now matches against a regexp instead of a string.

Better Vista support:

  * Support for trusting precompiled *.zo files (for use with installer on
    Vista systems).  To use, make sure your *.zo files are fully
    up-to-date, and create an empty file named "TRUST-PRECOMPILED" in the
    top-level of your program directory.
 
NOT YET TESTED:

  * Added a manifest to UpdateInstaller, with requireAdministrator flag
    set.
  * Added a CommandLine::ExecAsync function which calls ShellExececute
    internally, so that we can use UAC privilege escalation.
  * Removed all the DIR-WRITABLE? code. It appears to be unwise to believe
    the return values on Vista, so I'm not going to leave it around to
    tempt people.
  * Moved the Updates directory into the user's script data directory,
    where the user is guaranteed to have write privileges.
  * We no longer attempt to copy UpdateInstaller.exe directly into program
    files, because we're not guaranteed to have sufficient privileges.
    Instead, we make a copy in a staging area, and let it copy itself in
    once it has obtained the necessary privileges.

0.3.18 - 01 Oct 2007 - emk

  * Re-ordered PLAYBACK-TIMER and MEDIA-FINISHED events so that the
    media-finished event always comes later.  This appears to prevent
    crashes in elements that call delete in MEDIA-FINISHED, though there
    may still be related problems.
    
0.3.17 - 28 Sep 2007 - tryon, emk

  * Adding better error-handling to NODE-FULL-NAME.
  * Adding assertion ASSERT-RAISES-MESSAGE.
  * #3954: Change made to report incorrect rect value in %CUSTOM-ELEMENT%.
  * Added CHECK_THROWN_MESSAGE to TestCase.cpp.
  * Added better error-handling to TValue so that primitives will throw
    much more descriptive error messages.
  * Added REFRESH to ANIMATE, to eliminate stuttering caused by Windows'
    failure to send repaint events in a timely fashion.

0.3.16 - 21 Sep 2007 - tryon, emk

  * #3954: Adding checks to prevent %custom-element%s from having a 
    negative-sized shape.
  * In ON-PROP-CHANGE, the veto function message now includes the vetoed value.
  * ASSERT-EQUAL changed to ASSERT-EQUALS; now uses EQUALS? internally.
  * Card template %TEST-SUITE% now displays the name of the current card.
  * #3954: Making the %CUSTOM-ELEMENT% shape-checking even better.
  * #4105: Correcting 'with' -> 'without' typo.
  * Added a "playback timer" system which can be used to notify a media
    object once a specified timecode has been reached.

0.3.15 - 14 Sep 2007 - emk, tryon

  * %EDIT-BOX% no longer focuses automatically.
  * All heavyweight elements (edit boxes, QuickTime movies, etc.) now have
    an ON FOCUS handler.  This has been tested with %EDIT-BOX%.
  * New %EDIT-BOX% handlers: SET-TEXT!, SET-INSERTION-POINT!, SET-FOCUS!.
  * %EDIT-BOX% now receives ON TEXT-CHANGED events.  These will be
    triggered whenever the contents of the edit box change.
  * #1707: Adding better error-handling if CREATE is passed a non-symbol.

0.3.14 - 5 Sep 2007 - emk, tryon

  * Major performance improvement: Ported ruby-objects.ss to use
    DEFINE-STRUCT instead of Swindle's DEFCLASS.  This way, we implement
    our featureful-but-slow object system using the limited-but-fast struct
    support in PLT (instead of relying on Eli's own featureful-but-slow
    object system).
  * Class functions OBJECT? CLASS? INSTANCE-OF? SUBCLASS? now work on both
    Ruby and Swindle objects/classes.  The old functions are available as 
    SWINDLE-OBJECT? SWINDLE-CLASS? SWINDLE-INSTANCE-OF? SWINDLE-SUBCLASS?.
  * ATTR and node properties now support passing Ruby types to :TYPE.
  * Better print output for backtrace code.

0.3.13 - 4 Sep 2007 - emk

  * Added a cache to speed up method dispatch.
  * Better labeling for backtrace in logs.

0.3.12 - 30 Aug 2007 - emk, brian, tryon

  * Integrating new path system.
    - Copied over %node-path% class from tamale_test staging area.
    - Added ugly DEFINE-NODE-CLASS wrapper to help ease transition.
    - Added instance predicate support to DEFINE-NODE-CLASS.
    - @* now takes a string as an argument, and no longer supports
      :IF-NOT-FOUND.  If you need the latter, see %NODE-PATH% RESOLVE-PATH.
    - @* now returns a %NODE-PATH% (and not an element).  This node path
      may be used more or less everywhere an element could be used.
    - Added RESOLVE function, which will turn paths into nodes and pass
      nodes unchanged.  Use this to resolve paths that might be used
      in inner loops or other performance-critical code.
    - Fixed performance regressions in animator library.
  * Porting nodes.ss to new object system
    - Removed ELEMENT special form.
    - Groups and sequences are now distinct parts of the class hierarchy.
      This may require rare code changes.
    - Added MAKE-RUBY-INSTANCE-OF?-PREDICATE function.
    - Fixed major bug in SEND%.
    - Added dubious .AUTO-DEFAULT-ATTR method.
    - Ported nodes.ss from Swindle to Ruby objects.  The changes are huge
      and the new code is ugly and slow.  In fact, we're basically
      emulating the old object system by kludgy metaclass programming on
      top of the new one.  More changes planned very soon.
      - Removed DEFINE-NODE-CLASS macro.
      - Major performance regression on features/mask/light in tamale_test.
      - Moderate performance regression on features/animation.
      - CommonTest test suite is currently broken.
    - Replaced <engine> with %engine%.
  * Don't instantiate nodes until they're actually run
    - Removed remaining support for non-temporary element silliness.
    - Made sure that certain functions could only be called on running nodes.
    - FIND-NODE now takes an argument that specifies whether the node found
      is expected to be running or not (or whether we don't care).  This
      API will change again soon.
    - Other node-finding functions also distinguish between running and
      non-running nodes.
    - Removed overridden versions of ENTER-NODE and EXIT-NODE, moving
      their features into various other places.
    - Redesigned RUN-CARD to have fewer dubious dependencies on the rest
      of nodes.ss in preparation for the class/instance split.
    - FIND-NODE now searches either a static node table or a running node
      table, depending on the value of its argument.
    - Replaced .AUTO-DEFAULT-ATTR with support for transparently defaulting
      ATTRs defined on classes after those classes are initialized.
    - Split ROOT-NODE into RUNNING-ROOT-NODE and STATIC-ROOT-NODE.
    - Modified DEFINE-NODE, CREATE, RUN-CARD, ENTER-NODE and EXIT-NODE to
      treat declared nodes as classes and instantiate them when they're run.
    - Removed now useless NODE-CHILDREN from API.  Use .ELEMENTS or
      .MEMBERS instead.
    - Fixed bugs in .RESOLVE-PATH, CARD-PREV, CARD-NEXT and related methods.
  * Replaced old PROP implementation with ordinary ATTR members.
  * Improvements to new object model
    - Added :type argument to ATTR.
  * Performance tuning
    - Turned on optimization for PNG/bitmap/image subsystems in wxWidgets,
      even in debug builds.
    - Turned on optimizer for mzscheme, even in debug builds.
  * Top-level ON handlers must now be wrapped with the form (WITH-INSTANCE
    (ROOT-NODE) ...).
  * Updating HACKING.txt instructions.
  * Support for external captions.
    - Added CaptionList class with a basic parser.
    - Added support for embedded XML in captions.
    - Integrated external caption support with MediaElement and Scheme API.
    - Cleaned up MediaElement API.
    - Made sure CALL-NEXT-HANDLER is called everywhere it is needed.
  * Small refactoring in SashFrame.
  * Added a *NODE-DEFINED-HOOK* for backwards compatibility with a branch
    of 0.3.11 (which we haven't made yet).
  * Removed old PrevCardName function (which wasn't being used anymore).
  * Exported LAST-CARD-VISISTED to prevent people from messing with *engine*.
  * Fixed bug in EXTENDS-TEMPLATE?.
  * Added FIND-RUNNING-NODE and FIND-STATIC-NODE as public versions of
    FIND-NODE.
  * Added JUMP-CURRENT and better error handling for attempts to jump to a
    running node.
  * Exported RUBY-CLASS?.
  * Better error handling if the engine attempts to access a node of the
    wrong type.
  * Renamed %NODE% .STATE to %NODE% .NODE-STATE to prevent name collisions
    with template properties named STATE.
  * Fixed bug in DELETE-ELEMENT-INTERNAL which left deleted nodes visible
    in their parent's .ELEMENTS lists.
  * Removed ENTER-NODE and EXIT-NODE wrapper functions.

0.3.11 - 6 June 2007 - emk

  * Upgraded to FreeType 2.3.4.
    - Disabled dejavu-serif-condensed, dejavu-sans-condensed and
      dejavu-sans-light, because the new FreeType now maps them to the base
      font name plus style bits.
  * Merged in ruby-objects.ss code from tamale_test.
    - Renamed lispish.ss -> language.ss.
    - Empty function calls with no function and no arguments are no longer
      legal.  Neither () nor [] may appear in ordinary runnable code.
    - The rarely-used WHILE macro no longer supports internal DEFINE
      forms, because it has been reverted to the Swindle version.
    - A bunch of low-level library dependencies in Runtime have been
      shuffled.

0.3.10 - 8 May 2007 - brian, emk, tryon

  * Made Tamale default to opening the program in the current directory, if
    one exists, otherwise falling back to the last opened project as
    before.
  * Allowed fonts to be organized into subdirectories, because we'll soon
    be adding a large number of GPL'd fonts.
  * Major overhaul of Fonts directory with many new fonts.  All of
    these fonts are from Debian.  See the appropriate directories for
    licensing information.
  * #3969: Fixed bug where the displayed cursor wouldn't update if a
    the mouse was over an element while its cursor was changing.
  * #3968: Fixed a bug where a cursor would initially display in the
    wrong position, because its coordinates weren't translated from
    screen to stage coordinates.
  * #3970: Fixed a bug where the engine would crash if you created a
    cursor element with the name of the currently active cursor.
  * Added FIT-TO-CHILDREN! method to %CUSTOM-ELEMENT%.

0.3.9 - 1 May 2007 - emk

  * #3961: Added RAISE-TO-TOP! method to %ELEMENT%.
  * Added CENTER-ON-PARENT! method to %ELEMENT%.

0.3.8 - 27 April 2007 - emk, brian

  * Implemented IMMEDIATELY, FINALLY and QUANTIZE for improving animation
    performance.  Also tweaked INTERPOLATE to avoid setting properties to
    their current values, so that QUANTIZE actually results in a
    performance improvement in typical cases.
  * Fixed divide-by-zero bug in AFTER.
  * Fixed bug which caused file load counts in data.tam to drift by 1.
  * Renamed START in Common/planet/planet.ss to START* to avoid
    conflict on M-. on start card.
  * Support for element-based cursors:
    - Created an abstract Cursor class to wrap cursors.
    - Modified elements to refer to cursors by name, not by keeping
      copies of the objects.
    - Modified Stage to deal with new cursor interface.
    - Added CursorElement class (a subclass of Overlay).
    - Added %CURSOR-ELEMENT% template in Scheme.
    - Made Cursor ownership protocol explicit, and stop using smart
      pointers to manage cursors.  The smart pointers were hiding quite a
      few ways to lose, and it's better to get all the tricky bits out in
      the daylight.

0.3.7 - 18 Apr 2007 - emk, brian

  * Renamed STRINGS -> PREFIX-AND-SUFFIX, PLAY -> PLAY-SPRITE and
    TRANSFORM -> SLIDE-AND-RESHAPE.
  * Turned AFTER into a macro and added some braces to the syntax.
  * Added support for highlighting and indenting functions as though
    they were syntax, using DEFINE-SYNTAX-INDENT.  This may slightly
    slow down opening files in the editor; please report any serious
    degradations in performance.
  * Improved syntax-highlighting and indentation of animations in both
    the integrated editor and in Emacs.

0.3.6 - 17 Apr 2007 - emk, brian

  * Moved drag.ss and q-and-a.ss into Runtime/5L directory.
  * Added ON PROP-CHANGE handlers for %TEXT%.
  * Ported various animation functions up from iml libs, and
    refactored as combinator library. See Runtime/5L/tamale-doc.txt
    for details on how to use the new library.
  * Added AFTER animation combinator, for performing animations in
    sequence.
  * Ported various shape manipulation functions from iml libs to
    Runtime/5L. 
  * Wrote documentation for animation, which can be found in 
    Runtime/5L/tamale-doc.txt.
  * Added ON PROP-CHANGE handlers for %RECTANGLE%.
  * Cleaned up newly-added shape-manipulation functions.  Still more
    cleanup and refactoring of animation features will be needed.
  * Modified %BASIC-BUTTON% to suppress immediate redraws on MOUSE-ENTER
    and MOUSE-LEAVE events.  This fixes a number of problems with premature
    screen updates.
  * Added ELEM-MAP and ELEM-MAP-2, which allow mapping over our built-in
    "collection" types. ELEM-MAP, in particular, is equivalent to Haskell's
    FMAP.
  * Added a Dylan-style CURRY function (not to be confused with Haskell's
    CURRY function).
  * Moved animator code to animate.ss.

0.3.5 - 21 March 2007 - emk, brian

  * #2856: Fixed the slow-loading bug which caused each reload to take
    O(MN), where M is the number of modules in the program, and N is the
    number of loads since first startup. This was caused by sloppy
    installation of our custom compiled-zo handler.
  * Updated tamale.el to handle proposed object syntax.
  * Adding support for MASK operation.
  * Added :SHOWN? flags to as much of the API as possible.
  * #3841: Added a debug-log statement when we encounter an error loading a 
    file.  The program still quits, but now you can see the actual error 
    by looking at the debug log instead of having to experiement to find it.
  * Added preliminary documentation to the %ANIMATED-GRAPHIC% template.

0.3.4 - 20 Dec 2006 - emk, brian

  * Fixed bug in STRING->XML.
  * Added ON BOUNDS handler to %element% and subclasses.
  * Added :PARENT argument to element creation helper functions.
  * #2493: Fixed MEASURE-TEXT to return a bounding box based on the line
    width calculated by the line-breaking algorithm, not by the drawing
    algorithm.  This should guarantee that MEASURE-TEXT and DRAW-TEXT
    agree about where the line breaks should go.
  * #2078: Changed ascender and descender calculation to consider more
    letters.  Also added fallback code to catch overlong ascenders and
    descenders, such as the ones which may appear on the integral sign
    (U+222B).
  * Modified Typography library to use std::vector instead of std::deque.
  * #2493: Fixed bug where we'd sometimes clip a single pixel off the
    the left-most edge of the text.  We do this by indenting all text
    by enough pixels to handle the smallest negative left bearing of any
    character in the text.  This may cause left-edge alignment problems
    under certain circumstances, but not by more than a pixel.
  * #2061: Fixed DRAW-TEXT and MEASURE-TEXT to include drop shadows when
    calculating line lengths and bounding boxes.  From now on, any drawn
    text which falls outside the bounding box returned by MEASURE-TEXT
    will automatically cause an assertion failure.
  * #3818: Added PROGRAM-RELEASE-ID function (in the updater module)
    which can be used to get the release ID of a Tamale script.
  * #3829: Moved all top-level *.png graphics used by the engine (splash
    screens, progress bars, etc.) to the Graphics/script directory.
  * Added new MOVE-RECT-RIGHT-TO, MOVE-RECT-BOTTOM-TO, and
    MOVE-RECT-LEFT-TOP-TO functions to shapes.ss.
  * #3166: Creating a movie element and pausing it immediately should now
    work.  Please report any remaining pause-related bugs.
  * #2096: We now sanity-check the names of cards, elements and other nodes.
  * #3811: %EDIT-BOX% is actually a useful class now.  It supports
    specifying the text size, detecting enter events, and retrieving the
    text typed by the user.  This should make %EDIT-BOX% an acceptable
    replacement for the old INPUT command.
  * #3834: Added OPEN-IN-BROWSER command, which opens a URL in an external
    web browser.
  * #3832: Upgraded to PLT Scheme v360.  This makes Scheme case
    sensitive, and adds preliminary backtrace support.  Backtraces are
    written to Debug.log.  See deprecated.ss for more notes on the
    upgrade.
  * #3830: Made %CUSTOM-ELEMENT% instances resizable--SHAPE is now a
    settable property.  Note that changing the shape of a custom element
    will clear the associated overlay, which isn't any problem for code
    using the new ON DRAW interface.

0.3.3 - 7 Dec 2006 - emk, tryon
 
  * #3792: Added support for QuickTime movies with a ::GetMovieBox that is
    offset from 0,0.  MacTech says that this can happen, and I'm seeing it
    in QuickTime movies with a text track, which we need for captions.
  * #3792: Added support for MEDIA-CAPTION events.  By default, we make the
    first QuickTime text track invisible, and report the captions to the
    script as they arrive using MEDIA-CAPTION events.  (It's possible to
    override this behavior, of course, and display the text track
    normally.)
  * #3810: Added support for changing the style and text of a %TEXT-BOX%,
    and fixed TEXT-BOX to have the same argument order as other
    functions. These changes make TEXT-BOX elements usable for captioning.
  * #3828: Nodes.ss now provides <CARD-GROUP>, CARD-GROUP?, <CARD-SEQUENCE>,
    CARD-SEQUENCE?.
  * #3812: Changed text formatting language from legacy punctuation system
    to regular XML.  Supported tags include: I, EM, CITE, B, STRONG,
    and the non-standard H ("highlight").

0.3.2 - 29 Nov 2006 - emk

  * #3807: Removed minimal support for "real time" (i.e., non-consing)
    state-db listeners, since we didn't actually need it in our last major
    project (which made aggressive use of the state-db), and there's no
    need to keep an extra Scheme interpreter hanging around for no good
    reason.
  * #3808: Replaced several top-level functions with ON handlers, in an
    effort to make our API more object-oriented.  See deprecated.ss for the
    full list.
  * #3809: The functions WAIT, DELETE-ELEMENT and DELETE-ELEMENTS no longer
    accept symbols in place of actual elements.  (To get the old behavior,
    call ENABLE-DEPRECATED-FEATURES! at script load time.)
  * #3810: More API cleanup in tamale.ss.  Most element templates no longer
    have "-element%" in their names (except for abstract templates near the
    top of the hierarchy), and the NAME argument for most element creation
    helpers has been made a keyword argument (finally).  ddc and brian both
    seemed to think this change was plausible; let's see how it works in
    practice.
  * #3792: Added very preliminary accessibility support.  We now expose
    all the elements on the Stage via wxAccessible (and thus MSAA),
    although we don't yet provide any useful information about them.
  * #3813: Added %BOX%, %TEXT-BOX%, %GRAPHIC% and %RECTANGLE% elements (and
    corresponding helper functions).  These should be used in place of the
    regular drawing calls to help make 508 support easier (and to help
    ease our migration to a future GUI editor).
  * #3810: More API cleanup in tamale.ss.  Renamed *-PICTURE to *-GRAPHIC,
    changed the argument order of DRAW-TEXT and DRAW-GRAPHIC, renamed
    %ZONE% to %CUSTOM-ELEMENT%, and rewrote templates to support ON
    handlers for DRAW, ERASE-BACKGROUND, and INVALIDATE (which will help us
    to support a future screen editor).

0.3.1 - 27 Nov 2006 - emk

  * #3806: The engine now uses 1-3% of the CPU while idling, and 6-20% when
    playing QuickTime, instead of 100% (at least as measured on my machine).
    This fix depends on #3783, the NAP and TIMEOUT fix.
  * #3810: Massive cleanup of Runtime directory, including reorganization
    and deprecation.  See Runtime/5L/deprecated.ss for a list of renamed
    and removed functions.

0.3.0 - 21 Nov 2006 - brian, emk

  * #3647: Fixed update installer to build parent directories for
    new files correctly.
  * #3683: Removed PNG of stage from script crash reports--it made the
    crash reports too big, and we hadn't used it much.
  * #3691: The update installer now checks if it can write to the
    destination paths before copying files, and will keep trying for
    10 seconds if it cannot write to a file, in case it is run before
    the engine has fully quit.
  * #3692: Update installer now touches each file that it installs,
    so PLT (and any other tools that care) will have appropriately 
    up-to-date timestamps on all files. 
  * #3783: Replaced NAP with a much simpler implementation, and removed
    TIMEOUT entirely (pending reimplementation).  These were not especially
    nice bits of code, because they predated much of the modern engine's
    design.
  * #3784: Replaced CALL-AT-SAFE-TIME with RUN-DEFERRED (thus affecting
    DEFERRED-CALLBACK).  Callbacks are now postponed until *after* the card
    body has run completely.  We've also fixed a bug that could cause
    deferred code to be lost if *other* deferred code called JUMP, and
    provided a way to automatically clean up deferred callbacks when
    exiting a card or a sequence.
  * #3798: Removed support for "backgrounds" from the GUI.  Since this
    support didn't actually do anything, we don't particularly need it.
  * #3798: Removed support for modal text input, which should be
    implemented using regular input elements.
  * #3786: Added support for skipping to the end of a Vorbis stream.
  * #3789: Events and deferred thunks are now visible in Debug.log, but
    the installation of ON handlers is no longer recorded.
  * #3791: If Debug.log is not created at startup, maintain an internal
    list of recent log entries.  If a crash occurs, write the entries to
    disk.  Also, other cleanup of TLogger.
  * Switched to Visual Studio 2005 for official Windows build.
  * Removed preinstaller from build, because we don't currently need it.
  * Dealt with various warnings introduced by Visual Studio 2005, at
    the Common and 5L project levels.  There's a lot more warning work
    still to go.  This particular change included updading boost's
    visualc.hpp configuration header to the latest version.  

0.2.3 - 23 Oct 2006 - emk, brian

  * #3503: The preinstaller now confirms quit requests with the user, and
    shows an "Installing..." label when running the QuickTime installer.
    This should help prevent problems during the long pause while the
    QuickTime installer launches.
  * #3503: Fixed silly bug when preinstaller showed the "confirm exit"
    window when quiting itself normally.
  * #3510: We no longer poll for the installed QuickTime version when
    our preinstaller window is in the background, to prevent the QuickTime
    installer from trying to quit our preinstaller because it "uses
    QuickTime."
  * #3168: UpdateInstaller now has do-nothing "--uninstall" option, which
    will allow us to improve our uninstall options in the future.  This
    is a "add it now or never" hook.
  * #3168: "UpdateInstaller --uninstall ." can now create the directories
    required for its log file.
  * #3581: Modified how preinstaller launches QuickTime installer, and
    added a dialog box warning QuickTime Pro users.
  * #1760, #3591: Fixed crash that occurred when drawing to DrawingArea
    objects with an area of zero.
  * #3576, #3508: Added a "fatal error without crash report" routine for
    use in fixing these two bugs (and others).
  * #1712: Once a crash has been detected, supress further display of
    wxWidgets-originated error messages, and just log them.  This prevents
    several common non-fatal error conditions in the crash reporter (no
    network, misconfigured server, etc.) from looping back into the crash
    reporter.
  * #3612: Fixed bug which caused engine redraws to occur even when the
    drawing calls had been fully clipped.  This should prevent flicker
    in a few places that use heavyweight (i.e., native GUI) elements near
    overlays.
  * #3167: Added basic support for progress bar in the updater. This
    updates once per file downloaded.
  * #3508: Add error checking to scheme file loader that will allow it to
    detect the case when a limited user tries to run the program before an
    administrator has run it, and displays a nice error message prompting
    the user about what to do.

0.2.2 - 20 Sep 2006 - emk, brian

  * #2930: Implemented a "preinstaller" which can be used as an
    autorun.exe.  The preinstaller walks the user through installing
    QuickTime, which is helpful, since the latest version of the QuickTime
    installer is both (a) asynchronous once launched and (b) legally
    unmodifiable under the standard distribution agreement.  For now, the
    "preinstaller" is hard-coded for use with our latest project, but it
    should be easy to parameterize for other projects.
  * #3467: Applied a band-aid to the crash-handling logic so that it will
    generally restore the system task bar for all but the worst crashes.
    We could benefit from more work in this area, but a more complete fix
    would destabilize the engine.
  * #3466: Send crashes to a different server by default.
  * #3461: Disable screen saver a bit more thoroughly in full-screen mode,
    even if the user has a password protected screen saver turned on.
  * The update installer now correctly detects unwritable directories.

0.2.1 - 17 Sep 2006 - emk, brian

  * #3162: MOVIE-RESUME will no longer cause a finished movie to loop.
  * #3042: Quake 2 console access now turned off by default.  To restore,
    run the command (quake2-command "bind ` toggleconsole").
  * Changes to UpdateInstaller and related code.

0.2.0 - 9 Sep 2006 - emk, brian

  * Fixed bug in UpdateInstaller.exe that prevented it from working with 
    Windows pathnames.
  * Fixed UpdateInstaller.exe to not try and replace itself as it was running.
  * Made downloader honor redirects (max of 10 redirects).
  * Replaced "volatile" with "IntuitiveVolatile" in multithreaded code,
    in an effort to prevent race conditions on a future version of the
    x86 architecture (and possibly the current version).
  * #1875, #2305, #3005: Deiconization bugs (and related crashes during
    screen resizing) fixed.  This fix, unlike the first, seems to cover
    all the edge cases I could reproduce.
  * #2958: Added a hook to detect engine-trigged shutdowns, etc., so
    programs have an opportunity to save prefs, section timing data, etc.
  * #1875: Partial fixes for background "cursor theft".  These seem to
    work very well in full-screen mode, but still have issues in developer
    mode, thanks to some interesting behavior with
    wxTopLevelWindow::IsActive and wxWindow::SetFocus.
  * Removed "Control-Q" accelerator for quiting, because it wasn't a
    standard Windows accelerator, and because (like the still-remaining
    Alt-F4) it didn't go through EXIT-SCRIPT.
  * Added some comments with more information about recent bugs.

0.0.63 - 2 Aug 2006 - emk, brian

  * #2894: Made it possible to slide along walls in Quake 2 at a
    lower-than-normal walking speed.  This makes invisible guidewalls much
    more effective when moving at a "realistic" pace.  There seems to
    be a slight asymmetry in wall friction, which worries me slightly,
    but this is a minimally invasive fix for the problem.
  * More updater changes from Brian.
  * Updated copyright messages for 2006 release.
  * Added Rakefile to clean, build and test the engine.  This is the first
    of many steps towards improving our project automation.
  * Centralized version-number handling in TVersion.h.

0.0.62 - 26 July 2006 - emk, brian

Internal release for UpdateInstaller testing.

  * Added placeholder code for launching the UpdateInstaller.
  * Added watchdir/unwatchdir to Quake 2 to support detecting when the
    user looks in a specified direction (#2893).
  * Suppress splash-screen on reload so scripters can visually see the
    change from the old version of a card to the new one (#2921).

0.0.61 - 30 Jun 2006 - emk, brian

  * Created Downloader class, for downloading a file specified by a
    URL to the local disk.
  * Changed error handling of wxWidgets errors to make better use of 
    the TLogger class and not use the default error handlers. 
  * Moved DoIdle from TSchemeInterpreter to TInterpreter.
  * Fixed up code so we can compile under Visual Studio .NET 2005, and
    updated HACKING.txt to include instructions for how to set up
    VS.NET 2005.
  * Modified CARD-PREV to find the previous *card*, not just the previous
    *sequence*, in order to make "back" buttons in do the right thing
    in nested sequences (bug #2315).
  * Added HIDE-CURSOR-UNTIL-MOUSE-MOVED! function (#2467).
  * Preliminary splash-screen progress bar support (#2856).

0.0.60 - 20 Oct 2005 - emk

  * Turned off wxCLIP_CHILDREN to allow our QuickTime playback code
    to work the way it did before wxWidgets 2.6.0 (bug #2014).
  * Log files are now stored in
    C:\Documents and Settings\<User>\Application Data\Tamale (bug #1847).
  * User data files are stored in subdirectories of the log directory
    (bug #1847).
  * Fonts/cache.dat is now Application Data\Tamale\<Script>\fntcache.dat
    (bug #1847).
  * Screen-saver is disabled when in full-screen mode or playing video
    (bug #2175).

0.0.59 - 18 Oct 2005 - emk

  * Merged more-robust QuickTime networking support from the 3.4 branch.
  * Fixed rare crashing bug in Widget (bug #2230, #1714).
  * Fixed crashes in EXIT-SCRIPT.
  * Hooked up basic error-handling for QuickTime network problems (bug #1714).
  * Added %MOVIE-ELEMENT% handlers for USER-EXIT-REQUEST,
    MEDIA-NETWORK-TIMEOUT, MEDIA-NETWORK-ERROR, MEDIA-LOCAL-ERROR,
    SET-TIMEOUT! and END-PLAYBACK.
  * Added NATIVE-DIALOG function.

0.0.58 - 24 Aug 2005 - emk

  * Fixed crashes when overlays were partially obscured by the edge
    of the viewport in Quake 2 (bug #2099).
  * Added HTML entity &lambda; (just for fun).

0.0.57 - 23 Aug 2005 - emk

  * Added support for many new named entities, including &alpha;, &beta;,
    and &gamma; (for discussing radiation).
  * Added support for numeric entities (e.g., &#8225; for double-dagger).
  * Removed lots of legacy code for non-Unicode encodings.

0.0.56 - 18 Aug 2005 - emk

  * Don't show "Tamale" in application name when in runtime mode (bug #1728).
  * Display script icons when in runtime mode (bug #1728).
  * Added POINT-IN-SHAPE? (bug #2086).
  * Added support for floating zones in a separate layer when dragging
    them (bug #2085).

0.0.55 - 27 July 2005 - emk

  * Added NOPUSH flag for FUNC_DOOR objects in Quake.  This flag should
    make doors "polite"--they won't push you, they won't damage you,
    and they'll snap open instantly if they hit you.  And if the doors
    snap open, they won't mess up the trigger's toggle state (bug #1769).
  * We now send MEDIA-FINISHED events for Vorbis audio streams (bug #2052).

0.0.54 - 26 July 2005 - emk

  * Added FREEZE command which can be called from the Quake 2 console to
    freeze/unfreeze the player in place instantly.  Without arguments,
    FREEZE toggles the current state, but you can also pass in an explicit
    ON or OFF argument.  For odd technical reasons, you can't crouch while
    frozen.  This feature requires a new engine as well as a new
    gamex86.dll for best results (bug #1817, partial).
  * Added FREEZES and REGION_NAME fields to FUNC_WALL objects in Quake 2.
    When the player hits a wall with a FREEZES field, the player is
    immediately frozen as though they had issued a "FREEZE ON" command.
    When the player hits a wall with a REGION_NAME field, the state-db key
    /quake2/hit-wall?/wallname is set to #t (bug #1817, partial).    
  * Added explicit "ON" and "OFF" arguments to the "GOD" and "NOTARGET"
    commands in Quake 2.  As with the new FREEZE command, the optional
    arguments will also surpress console output (bug #1769, partial).

0.0.53 - 22 July 2005 - brian, emk

  * Fixed the occasionally broken indentation and highlighting of
    special forms (bug #2033).
  * Crash reporter bugfixes (bug #2032):
    - The crash reporter no longer fails if it the stack contains
      a corrupt wxString instance.  This is a patch pulled from
      upstream wxWidgets CVS and applied by hand.
    - If the crash reporter itself crashes, we attempt to just pop
      up a simple error dialog and exit.
    - We now catch wxWidget assertion failures and feed them to
      the crash reporter.
  * If the Stage loses its mouse grab unexpectedly, it now attempts
    to do something reasonable (bug #2032).
  * Nightly build scripts have been fixed.
  * Added support for automatically generated make-classname
    functions, class predicates, slot getters and setters to tags.ss
    (bug #1972).
  * Added support for defining new syntax taggers to tags.ss (bug
    #1972).
  * We no longer override OnAssert in the Release build (where it
    doesn't exist, anyway).
  * Added a IML_Q2_TOTAL_CONVERSION preprocessor macro which can be
    used to remove Quake 2's dependence on certain files.  This only
    includes files which can't be easily replaced by dummy files (bug #1688).

0.0.52 - 14 July 2005 - emk

  * Made HEARTBEAT a non-logging primitive.
  * Reset wxUSE_DISPLAY to 1 to re-enable full-screen mode after upgrade.
  * Major crash reporter enhancements (bug #1712, partial).
    - Crash reports for scripts go to a separate web site.
    - Reports include script name and version.
    - Reports include the current and previous card names.
    - Reports include a build timestamp and crash timestamp.
    - Script crash reports include a screenshot!
    - Reports include processor information.
    - REGISTER-DEBUG-REPORT-FILE! can be used to include extra files
      in the crash report, as requested by scripters.
  * Bumped data.tam file version and implemented simple format migration.
  * Added wxHyperLink class from wxcode.sf.net for future use.
  * Made wxHyperLink::ExecuteLink public.
  * Updated installer for new crash reporter.
  * Made some fixes to nightly build script.
  * Documented wxWidgets upgrade procedure.

0.0.51 - 13 July 2005 - emk

  * Replaced CrashRpt with wxDebugReport.  Not all features are
    implemented yet; this is a work in progress (bug #1712, partial).
  * Added code to submit debug reports to the server (bug #1712, partial).
  * Fixed bug which caused wxDebugReport to generate invalid XML.

0.0.50 - 12 July 2005 - emk, brian

  * Fixed bug in which compiled .zo files weren't being recompiled. 
  * Added runtime support for moving all %zone% elements. When
    creating a zone, AT will be set to the origin of the shape, and
    SHAPE will be moved to have a (0,0) origin, so that when you
    offset SHAPE by AT you get the actual shape on the screen.
  * Added &deg; character (bug #2000).
  * Upgraded our included wxWidgets to 2.6.1, and modified some engine
    code to use new wxWidgets APIs (bug #1712, partial).  We also
    reapplied the following patches which had been backed out before
    the upgrade:
      - wx.rc: Build dependency hack.
      - stc: Lots of local LISP-mode tweaking.
      - evtloop: Hacked in *another* set of event loop hooks.
  * Fixed bugs introduced by LexLisp.cpp merge (bug #2004, bug #2005).
  * Fixed QuickTime black-rectangle bug introduced by wx 2.6.1 (bug #2007),
    and cleaned up other problems caused by calling wxWindow::Create()
    automatically before setting up object options.
  * Fixed custom build step broken by wx 2.6.1.

0.0.49 - 8 July 2005 - emk, brian

  * Added MoveTo and Origin to TPolygon, and allowed Zone elements to
    be moved. Runtime support for this will be added later. 
  * Fixed exception-handling bug in TSchemeInterpreter::Call5LPrim
    which corrupted C++ exception-handling state.  We *think* this
    should cure several of our most annoying hard-to-reproduce bugs
    (bug #1691, bug #1762, believed fixed).
  * Fixed test-suite failure introduced by HEARTBEAT function.
  * Fixed buggy call to Sys_Error in qoverlay.cpp (bug #1989, partial)
    and increased the maximum number of overlays (bug #1897).
  * Fixed "Not Responding" timeout during initial startup on slow machines
    by calling ::PeekMessage before and after every *.zo compilation
    (bug #1898).
  * Give reasonable errors for missing Vorbis files (bug #1993).

0.0.48 - 5 July 2005 - emk, brian
    
  * Added COPY-STRING-TO-CLIPBOARD function for use by developer tool
    libraries.
  * Fixed bug in AudioStream::StreamsAreRunning().
  * Converted AudioStream to use a background thread instead of a 
    timer (bug #1716, partial).
  * AudioStream now does initial Idle() in backround, which should
    make it possible to start audio without clobbering 3D performance.
    Some clean-up still required (bug #1716, partial).
  * AudioStream threading code cleanup finished (bug #1716).  The
    BACKGROUND_START_AFTER_PRELOAD code is still in place, but turned off.
    If testing doesn't reveal any stuttering at the start of audio
    playback, we'll delete it and simplify the audio classes considerably.
  * Fixed bug where PortAudio would sometimes fail to shut down a stream
    properly.
  * Added logging code to report screen aspect ratios and suspected
    "merged" monitors (bug #1934, partial).
  * Fixed the bug which caused italic text to be cut off at the end of
    a line (bug #1955).
  * Fixed About box to use correct #define to get versions.
  * Fixed missing icon bugs for Listener and other windows.
  * Hacked ScriptEditorDB to attempt to clean up duplicate file
    entries with different case, i.e., "R1.ss" and "r1.ss".  This
    code is a bit kludgy because it tries to avoid expensive and
    complicated file I/O.
  * Added :VOLUME parameter to all media elements.
  * Fixed QuickTime SET-MEDIA-VOLUME! and :VOLUME support to
    actually work.  (The original code was simply broken.)

0.0.47 - 21 June 2005 - emk

  * Added STYLESHEET function to create new stylesheets on the fly.
  * Moved many RECT and POINT functions into types.ss.
  * Added <LAYOUT> class to lay out boxes on a screen.
  * Other minor Runtime tweaks.
  * Added script/definition tree to left of ScriptEditor.
  * Added icons for new script/definition tree.
  * Clicking on folders jumps to definition.
  * Refactored layout-saving code from StageFrame to SashFrame.

0.0.46 - 4 Feb 2005 - tryon, emk, naomi

Major editor improvements:

  * You can use Alt-. to jump to the script for the currently running
    card, and to look up the definition of functions in the editor.
  * The editor now displays call tips after you type a function name.
  * Fixed a crash when the user hit Control-E on the loading screen.
  * Added a simple ScriptEditorDB class to support Meta-dot lookups
    of definitions.
  * Heavily overhauled ScriptEditorDB to use transactions more extensively,
    run faster, and provide better APIs to the ScriptEditor.
  * Fixed SQLite3 to automatically destroy reader objects.

Other changes:

  * Added Quake 2 variable 'cl_disablemenu' which allows the Quake 2
    menu system to be disabled and replaced with a custom "escape"
    binding (bug #1740).

0.0.45 - 15 Dec 2004 - emk

  * Updated LICENSE.txt file to include latest information (bug #1724).
  * Added support for Alt-Tab out of full-screen mode (bug #1726).
  * Added code to hide and show the taskbar (bug #1726).
  * Added the function MARK-UNPROCESSED-EVENTS-AS-STALE! for manually
    marking all queued events as stale.  This is helpful if the user
    is repeated clicking on something or pressing a key waiting for
    a slow task to happen.  This function doesn't need to be called
    from event handlers, which always mark all unprocessed events
    as stale (bug #1731).
  * Check to make sure the engine has the primitive WakeUpIfNecessary
    before calling it.  (This is what I get for not running the full
    test suites.)
  * Make sure to focus the correct button on screen-adjustment dialogs
    to prevent Windows from changing the default.  This is dumb;
    wxWidgets should do this for me.
  * The engine now gives a useful error message if exceptions occur
    in FiveLApp::MainLoop.  This fixes the mystery exception Robinson
    was seeing when the engine was launched with a bogus startup
    directory (bug #1853).

0.0.44 - 13 Dec 2004 - emk

  * Added splash screen with graphic and copyright notice (bug #1725).
  * The screen-resizing code is now polite--it asks first, confirms
    afterwards, and stores prefs based on system screen geometry.
    You can override it by holding down "shift" when Tamale switches
    into full-screen mode (bug #1280).

0.0.43 - 13 Dec 2004 - emk

  * Added QUICKTIME-COMPONENT-VERSION primitive.
  * Removed the kInitializeQTMLUseGDIFlag from QuickTime startup. This
    will once again allow us to use hardware acceleration, with possible
    negative consequences. Keep an eye out for QuickTime bugs on weird
    machines for the next month or two.
  * Made sure we call scheme_set_stack_base with a second argument of 1 to
    prevent the Boehm GC from scanning video card memory mapped into our
    address space by QuickTime (which is hideously slow).  We've been
    neglecting this fix for a while because we've been using
    kInitializeQTMLUseGDIFlag, which keeps QuickTime from mapping video
    memory.
  * We now detect if QuickTime isn't installed and give an appropriate
    error (bug #1846).
  * We handle top-level exceptions much more gracefully and informatively
    than before (bug #1846).
  * We no longer register elements with the stage before they're fully
    created. This fixes the bug where throwing an exception in an element
    constructor would crash the engine (bug #1836).
  * The engine now preforms delayed wake-ups of the interpreter (after the
    end of a WAIT) more robustly, which should fix some ugly assertion
    failures (bug #1845). I'm convinced this portion of the code will need
    a redesign, and have added some comments to that effect.
  * The engine no longer crashes if you press control-space in a
    simulation (bug #1838).  When the engine goes into edit mode, it
    now deletes all elements and any StateDB listeners registered by the
    script.
  * The error dialog no longer floats over all other windows (bug #1829).
  * Basic runtime mode implemented.  This supports launching directly to
    full-screen mode with a specified script, and disabling editing options
    if 5L.prefs is missing (bug #1726).  As noted in the bug, a number of
    other issues remain, and we'll have to deal with them before declaring
    the runtime mode perfect.
  * Added code to update menu accelerators more reliably while in runtime
    mode (bug #1726).  This may cause performance problems.
  * All script errors are fatal in runtime mode (bug #1730).

0.0.42 - 06 Dec 2004 - emk

  * EVENT-STALE? no longer gets confused if your system has been
    up for more than 49.7/2 days (bug #1779).

0.0.41 - 06 Dec 2004 - emk

  * Added version to "About..." dialog (bug #1785).
  * Fixed Quake 2 to stop playing CD audio and blocking CD mounts (bug
    #1676).
  * Added EVENT-STALE? to detect old mouse and key events (bug #1779).

0.0.40 - 08 Nov 2005 - emk

  * Added ANIMATE function.
  * Modified Tamale to use standard open file dialogs (bug #1713).
  * Upgraded FreeType from 2.1.4rc1 to 2.1.9.  Text may look different--
    supposedly better.  This will allow us to start fixing low-level
    FreeType bugs.
  * Fixed calculation of nominal point sizes to be compatible with
    new FreeType version, which appears to be better documented in
    this respect.
  * Added code to make sure we position the StageFrame on the actual
    display (part of bug #1272).
  * The engine no longer crashes if errors or jumps occur in (ON EXIT ...)
    handlers--instead, we report the error and continue with the original
    jump (bug #1761).

0.0.39 - 21 Sep 2004 - emk

  * Quake 2 no longer places the cursor outside the window when running
    on the left-hand monitor of a two-monitor system.  However, under
    certain complicated circumstances (that shouldn't come up for users
    running in full screen mode) it is now possible to make the Quake 2
    player spin continuously (bug #1739, mostly fixed).
  * Fixed assertion failure during transitions where the dirty rectangle
    didn't fit on the screen (bug #1753).  This was a dumb error.

0.0.38 - 20 Sep 2004 - emk

  * Fixed bug: Engine no longer tries to wake up interpreter if interpreter
    doesn't exist.
  * Fixed bug #1271: Calling %kernel-pause from a callback no longer
    crashes the engine.
  * Fixed bug #1729: We give appropriate errors if the user calls illegal
    functions from inside a callback (instead of sometimes crashing).  The
    prohibited list is WAIT, NAP, TIMEOUT and the modal text input stuff.
  * Fixed bug #1746: Screen resizing code turned back on.
  * Miscellaneous cleanup in typography code.  I was trying to track down a
    bug--which turns out to probably be in FreeType--but this reworked code
    is clearer and better.  The actual bug fix will wait until we upgrade
    FreeType.

0.0.37 - 19 Sep 2004 - emk

  * Warning fixes.
  * Fixed bug #1687: Suspending and restoring Tamale in the inventory
    screen no longer causes Quake 2 to lock the cursor.
  * Fixed bug #1695: WAIT now works for Vorbis audio.  This is still
    slightly experimental, but please start playing around.  Remember, we
    can't stream Vorbis yet.
  * Fixed bug #1706: Scheme ASSERT is no longer fatal, which means it can
    be used to report user errors.  %ASSERT can still be used to report
    kernel errors, and will mail a bug report.  This makes a number of
    engine-crashing bugs non-fatal script bugs.
  * Fixed bug #1738: In full screen mode, the engine automatically hides
    the cursor when there's nothing to click on.  This is still slightly
    experimental.  Some basic caveats:
      - QuickTime movies force the cursor to be shown only if they have a
        controller bar or they're interactive.
      - Other native widgets always force the cursor to be shown, including
        browsers, text boxes and ActiveX controls.
      - By default, zones and overlays only force the cursor to be shown if
        they have MOUSE-UP, MOUSE-DOWN, MOUSE-ENTER, MOUSE-LEAVE or
        MOUSE-MOVED handlers.  You can override this manually using the
        WANTS-CURSOR? property.
      - Cards with MOUSE-* handlers, but no zones, will not currently
        display a cursor.  This is half design decision and half bug; we'll
        wait for some experience before deciding one way or another.
      - The cursor doesn't always seem to update until you move the mouse.
        In particular, hidden cursors may not immediately become visible.
        So far, it *seems* that this is a Windows issue, but there's a
        chance Stage::OnIdle is doing something wrong.
      - "Show borders" uses red borders for elements which want a cursor,
        and grey borders for elements which don't care.
      - Zones which don't have WANTS-CURSOR? set will no longer participate
        in any mouse activities--they're effectively invisible to the
        mouse-handling code.
  * Fixed bug #1748: Crossfades can now be run during QuickTime movies.
    This required fixing the crossfader to only touch dirty portions of the
    screen, and to call wxApp::ProcessIdle between each frame so QuickTime
    doesn't starve for lack of CPU.  Unfortunately, fade durations are
    probably even less accurate by now, and won't get better unless I use
    high-resolution multimedia timers.

0.0.36 - 13 Sep 2004 - emk

  * Closing last tab when there are two or more tabs no longer
    causes an assertion failure.  The low-design still has issues,
    though, which we will need to address in a future refactoring.
  * Fixed bug #1690: We now completely clean up from (WAIT ...)
    when changing cards.
  * Fixed bug #1696: When notifying state-db listeners of changes,
    we watch out for listeners which delete other listeners.
  * Fixed bug #1697: Clicking on the stage without a script loaded
    no longer causes an assertion failure.
  * Fixed bug #1698: When "Reload Script" can't find the card
    it wants to jump to, it will jump to 'start' instead.
  * Fixed bug #1700: We now detect attempts to create nodes named
    '#f', and we check for duplicate node names earlier in the
    creation process, better preserving nodes.ss invariants.
  * Merged in lots of stuff from my laptop:
    - Preliminary sqlite3 integration for future use with editor.
    - More bsptools work.  This still doesn't run, but it provides
      pretty good documentation of how bsp files work.
    - Support for drawing lines in 3D while running Quake 2. This
      will be needed to debug AI, if we ever do AI.
    - Other minor tweaks and fixes.
    - A few preliminary warning fixes.  Much more to do.
  * Began work on smtpxx library.

0.0.35 - 09 Sep 2004 - emk

  * Began integration with CrashRpt library for crash reporting.

0.0.34 - 07 Sep 2004 - emk

  * More refactoring of DocNotebook in preparation for window splitting.
  * Added qtcheck project.  This is a DLL for use with InnoSetup; it
    allows installers to access the current QuickTime version, and the
    version of any QuickTime components.
  * The runtime now checks for different media locations automatically.
  * Added debug-var.ss for debugging local variables.
  * Fixed assertion failure in script editor.
  * Fixed debug build of qtcheck.
  * Added support for changing the font size in the script editor.
  * Added a :CLICKABLE-WHERE-TRANSPARENT? parameter to overlays, which
    makes them accept mouse-clicks even in completely transparent areas.

0.0.33 - 27 Aug 2004 - emk, madhura

This engine has not been extensively tested; it's just a quick build to
try out some ActiveX stuff.  See the test script for example code.

  * Quake 2 path-walking enhancements.
  * Support for embedding ActiveX controls.
  * Began refactoring of DocNotebook in editor, in preparation for window
    splitting support.

0.0.32 - 4 Aug 2004 - emk

  * Correct indentation of most special forms.
  * Support for [] braces in script editor.
  * Much smarter brace balancing code than is built into Scintilla.
  * Much more extensive syntax highlighting, including comments,
    characters, and many different types of identifiers.
  * Syntax highlighting automatically updates after Reload Scripts.
  * Bug fixes in file clobber detection code.
  * New Reload Scripts architecture--objects get notified automatically.
  * Support for viewing line numbers in script editor.

0.0.31 - 2 Aug 2004 - emk

  * Fixed alpha-compositing bug (which affected lots of text).
  * Fixed mShouldWakeUpOnIdle assertion failure.
  * Disabled ReloadScripts when it was only going to crash anyway.

Script editor improvements:

  * Close & Close All menu items
  * Wrap lines.
  * Show whitespace.
  * Save All
  * Offer to reload files which changed on disk
  * Check for changed files before changing and prompt

0.0.30 - 30 July 2004 - emk

We have a new wxWidgets version:

  * Updated Tamale for latest CVS version of wxWidgets.
  * Worked around radio-button defaut selection bug.
  * Fixed assertion failure caused by latest wxWidgets.

...and a new text editor:

  * Added an editor widget based on wxStyledTextCtrl (i.e. Scintilla).
  * Started using FiveL namespace on Windows.
  * Added support for Scheme-style indentation.
  * Implemented a tabbed-document control.
  * Simple File, Edit and Search menus work.
  * Saving, opening and reloading work faily well.

...and some other stuff:

  * Small bug-fix to alpha-channel box outline code--stop drawing
    over the same area twice.

0.0.29 - 02 June 2004 - emk, brian

  * Moved most of overlay support into quake2/client, except for
    actual drawing/conversion code.
  * Added a broken stub implementation of GL overlays.  This might
    actually work on some hardware, but seems to have driver issues
    on my laptop.
  * Added alpha channel support for horizontal lines, vertical lines
    and outlined boxes.  These should also now be drawn in identical
    locations regardless of graphics card and OS version.
  * Added clear-prefs!, clear-user-prefs!, and clear-global-prefs!, to
    support automatically clearing an entire preference file.

0.0.28 - 21 May 2004 - emk

Re-enabled OpenGL drivers and implemented reticle support.  (Overlays do
not work yet.)  You now need the wxref_soft.dll and wxref_gl.dll files to
run Quake 2.

To turn on GL, run "(set! (quake2-driver) 'gl)" before initializing Quake 2
for the first time.  There are ways to switch video mode on the fly, but
they're not entirely reliable.

  * Added a Vid_GetWindowPtr function to refimport_t for passing HWNDs
    and other data types through to the graphics driver.
  * Disabled second initialization of graphics drivers when running
    under wxWindows.
  * Added code to save r_projection_matrix during scene setup.
  * Implemented R_ProjectPoint duplicating GL vertex transform logic in
    software.
  * Modified ref_soft to get HWND from Vid_GetWindowPtr.
  * Modified Quake to prepend "wx" to DLL names when under wxWindows.
  * Added support for passing through driver name during Quake 2 init.

0.0.27 - 23 April 2004 - emk

New compiler.  Test this engine thoroughly, and do not use it to update any
of our programs until at least Wednesday of next week.

  * Updated to Visual Studio .NET to get access to the
    more-standards-compliant C++ compiler.  I'm tired of working around
    MSVC++ 6 bugs.

  * Worked around a fascinating compiler bug: No toolbar icons appeared
    when running Tamale because of breakage in wxDynamicCast.  It turns out
    that the wxClassInfo for wxBMPResourceHandler didn't include a correct
    m_baseInfo1 pointer.  This pointer was incorrect because
    wxBitmapHandler never got processed by wxClassInfo::InitializeClasses.
    *This*, in turn, occurred because the sm_first/m_next chain was broken
    at wxObject::sm_classwxObject.  *This* happened because the optimizer
    for the sm_classwxObject constructor could see the declaration
    'wxClassInfo* wxClassInfo::sm_first = NULL;' and optimized away the
    initialization 'm_next(sm_first)' because it assumed sm_first would
    still be NULL when the constructor was called (and because
    uninitialized fields default to NULL).  Solution: Turn off optimization
    for object.cpp in wxWindows.

    This is why you need to be able to read assembly.

0.0.25 - 23 April 2004 - emk

  * Updated boost C++ library to version 1.31.0.
  * Updated all copyright blocks for an open source release.
  * Removed the remaining half-dozen CVS log comments, except for the
    one in TVersion.h.
  * Manually reformatted a few comments to the doxygen comment style.
  * Automatically reformatted zillions of standard-format comments to
    the doxygen style.
  * Added at least one sentence of documentation for all public classes in
    the main program, no matter how simple or obscure.

0.0.24 - 10 March 2004 - emk

  * Added STATE-DB-DEBUG function.
  * Added "trigger_region" entity to Quake 2.
  * Added support for ending WAITs from a callback.  Experimental.
  * More state-db support functions.
  * SYMCAT works like CAT, but returns symbols.

0.0.23 - 4 March 2004 - emk

  * Added (ON MEDIA-FINISHED (EVENT) ...) handler.
  * Added support for setting volume of QuickTime movies.
  * Added support for setting volume of GeigerSynthElement.
  * Moved EventDispatcher support into Element.
  * Fixed bug which caused engine to crash if you quit it while Quake 2
    was displayed.
  * Attemped to prevent wxWindows from erasing the wxWindow in which
    we're displaying QuickTime movies.
  * Added a few 'using boost::foo' directives.

0.0.22 - 1 March 2004 - emk

  * Made sure all Quake 2-related state db entries got cleared at Quake 2
    startup.
  * Implemented look_target, r_text, r_target, and r_activated_target.
  * Implemented basic reticle drawing.
  * Renamed r_activated_target -> r_look_target.

0.0.21 - 27 February 2004 - emk

  * Added support for using FOREACH to iterate over hash tables.
  * Allowed defaulted template parameters to be passed to parent template.
  * Added error message for unexpected template parameters.
  * Added error message for accessing template parameters which were never
    defined.
  * Allow templates to override parameter defaults in parent templates.
  * %ZONE% now takes an optional :AT parameter.  If this parameter is
    specified, then :SHAPE must be a rectangle at 0,0.
  * Moving zones in now much easier.  Drag and drop code will have to
    be changed.
  * %animated-graphic% now treats ../x and ../y as being relative to
    the overlay's official location.
  * %animated-graphic% now takes a symbol as a state-db path.
  * An element's position is now relative to the element's parent.
  * Elements move when their parents move.
  * POINT, RECT, etc., now print in a readable representation.
  * Added QUAKE2-RUNNING? function.
  * %geiger-synth% now relies on the state-db to determine how many
    counts per second to play.

0.0.20 - 23 February 2004 - emk, djin

  * Added support for MATCH-LET.
  * Wrote a REAL->STRING function which can format floating point numbers
    reasonably well.
  * Added 5L-Prim PolygonContains that uses the TPolygon contains method.
  * Fixed ugly redraw flicker when updating overlays above Quake 2. 

0.0.19 - 19 February 2004 - kwasi, djin, emk

  * Added code to detect infinite cycles in TStateDB changes.
  * Added tamale-tags.sh script for Emacs users.
  * Added new Quake 2 console trigger command to activate targets.
  * Provide a whole new API for state db listeners: STATE-DB-FN,
    STATE-DB-FN/RT, REGISTER-STATE-DB-LISTENER!,
    DEFINE-STATE-DB-LISTENER, and DEFINE-STATE-DB-LISTENER/RT.
  * Fixed a bug (I hope) which caused Quake commands to have extra
    text appended to the end of the command string.
  * Implemented core of realtime Scheme interpreter.  This isn't very
    fast, but it never generates Scheme garbage.
  * Removed old STATE-DB-CHANGED event-handling code.  Use the new
    listener system instead; it's happy.
  * Wrote serialization code for binmsg protocol.
  * Wrote deserialization code for binmsg protocol.
  * Implemented binmsg support in stock gamex86.dll, client, wxquake2
    and Tamale.
  * Added countdown template in scheme

0.0.18 - 15 February 2004 - emk

Added support for attaching elements to any node, not just cards.  This
includes groups, sequences, and other elements.  When dynamically creating
an element, there are two ways to specify what parent it should have.
First, you can use the :PARENT argument to CREATE:

  (create %my-elem% :parent self :silly 'foo)

Second, you can use the WITH-DEFAULT-ELEMENT-PARENT special form:

  (with-default-element-parent self
    (create %my-elem% :silly 'foo))

WITH-DEFAULT-ELEMENT-PARENT is dynamically scoped, which means that it
affects calls to CREATE within any subroutine called during its duration.

If you use neither :PARENT nor WITH-DEFAULT-ELEMENT-PARENT, then the engine
will attach nodes to the current card.  (There is no current card when
initializing groups and sequences.)  You can call DEFAULT-ELEMENT-PARENT
to get the default parent used by CREATE.  The functions ELEMENT-EXISTS?
and DELETE-ELEMENT-IF-EXISTS now operate on the default element parent
unless told otherwise.

  * Allowed elements to be attached to any node, not just cards.
  * Added WITH-DEFAULT-ELEMENT-PARENT, DEFAULT-ELEMENT-PARENT, and
    :PARENT argument to CREATE.
  * Removed the need for :TEMPLATE to be used when declaring nodes or
    other templates.
  * Added CURRENT-GROUP-MEMBER function, which (for want of a better name)
    reports the card, sequence or group which is currently the topmost
    active element in the event handling stack.
  * CURRENT-CARD will now raise an error if no card is active.
  * We now check for attempts to attach handlers or elements to inactive
    nodes.
  * You can access the elements on a node with NODE-ELEMENTS.
  * @* now takes a :IF-NOT-FOUND argument.  By default, this argument
    raises an error if no matching node is found.
  * Major overhaul of entering and exiting nodes.
  * The engine no longer relies on TInterpreterManager to get the name
    of the current card.  Instead, it gets the card name through
    a parameter to NotifyEnterCard.
  * A recent bug which caused the engine to exit unnecessarily due to
    load time errors should now be fixed.
  * Updated tamale.ss.

0.0.17 - ??? - kwasi, djin, emk

  * Added APIs for accessing TStateDB from Scheme.
  * Implemented %animated-graphic% with corresponding AnimatedOverlay class.
  * Added support for (ON EXIT () ...) handlers.
  * Updated Quake 2 game interface.

0.0.16 - ??? - kwasi, djin, emk

TValue:
  * Cleaned up a whole bunch of legacy code that can be much simpler now
    that we have TValue.
  * Removed TObject, TArray and TBTree because they have overstayed their
    welcome by about a decade.
  * Cleaned up settyped. 
  * Added output operator for TValue containing TNull().
  * Added input operator for extracting from a TArgumentList into
    a TValue. 
  * Fixed TRect argument order (finally!).
  * Deleted TString and TURL.
  * Added TStateDB class.
  * Added preliminary support for running Quake 2 in the background.
  * Added support for showing and hiding elements in both Tamale and Quake 2.
  * Deleted tons of old code which wasn't doing anything any more.

Quake 2:
  * Mouse events can now be passed from Quake 2 to Tamale overlays.
    Use +minteract in Quake to release the mouse and manipulate overlays.

0.0.15 - 30 Jan 2004 - emk, kwasi, djin

Two major new features: Tamale overlays can now float over Quake 2
(graphically, at least--input hasn't been implemented), and the Scheme/C++
value-passing interface has been extensively revamped.  Expect a few
glitches.

TValue work (kwasi, djin, emk):

  * Implemented TValue class, with full test cases.
  * Added a TCallbackPtr typedef (using a shared pointer) and an
    output operator.
  * Added TestCase.h to CommonHeaders.h.
  * Added macros REGISTER_TEST_CASE_FILE and REFERENCE_TEST_CASE_FILE
    to TestCase.h and used them in TestAll.cpp.
  * Documented TValue and moved as much code as possible into TValue.cpp.
  * Reorganized TSchemeInterpreter and began work on conversion functions.
  * TValueToScheme can now convert almost all TValue types.
  * Patched swindle's EQUALS? function to compare lists recursively with
    EQUALS? instead of EQUAL?.
  * Added a CheckFuncHelper to TestCase.h for programmers who need to
    define custom versions of CHECK_EQ, etc.
  * Exported %kernel-equals from the kernel so C++ can test for equality
    of two Scheme values.
  * Added TInterpreter::MakeSchemePolygon and MakeSchemePercent.
  * Deleted TCallbackArgumentList and TSchemeCallbackArgumentList, and
    replaced them with much simpler TValueList code.
  * Re-arranged headers a bit, and added new files to CommonHeaders.h.
  * Removed all redundant includes of TValue.h and GraphicsTools.h.
  * Finished SchemeToTValue conversions.
  * Replaced TCallback* with TCallbackPtr (a smart pointer) everywhere.
  * TArgumentList no longer needs language-specific subclasses--it uses
    TValueList.
  * TValue can now do a few limited sorts of numeric type conversions.
  * Lots of little bug fixes and stress testing related to TValue.
  * Removed SET primitive.
  * Replaced TVariable/TVariableManager with TValue/new-TVariableManager.
  * Implemented operator<< for many basic types used by TValue.
  * Removed FindVariable and Assign.
  * Made TVariableManager::Get throw errors when trying to read a
    non-existant variable.

Quake 2 Overlays (emk):

  * Added a qoverlay.h interface for displaying 32-bit overlays above
    Quake 2.
  * Added overlay-related functions to the Quake 2 renderer interface.
  * Implemented 5-bit-per-channel inverse CLUT, which maps 24-bit
    colors onto the selected Quake 2 palette.
  * Implemented basic Q2_FORMAT_BGR support in the software renderer.
  * Implemented basic Q2_FORMAT_BGRA_PREMUL support in the software
    renderer.
  * Integrated Quake 2 overlays into Overlay and Stage classes.

0.0.14 - 13 Jan 2004 - emk

Vastly improved web browser integration, including the ability to embed
Internet Explorer using wxIE.

Scripting API changes:

  * HTML-related commands replaced with BROWSER-related commands.  See
    tamale.ss for details.
  * LOAD-PICTURE -> DRAW-PICTURE
  * WITH-DRAWING-CONTEXT -> WITH-DC
  * DRAWING-CONTEXT-RECT -> DC-RECT
  * PROP-BY-NAME -> PROP*
  * @-BY-NAME -> @*
  * SEND-BY-NAME replaced by more flexible SEND*
  * New syntax for relative pathnames: (@ relpath) -> @relpath
  * Added a MEASURE-PICTURE command.
  * Added an OFFSET-RECT command.
  * New MOUSE-GRABBED-BY? function.
  * New ENABLED? property on %BASIC-BUTTON%.
  * Support for (ON SETUP-FINISHED () ...) handlers.
  * New event types: BROWSER-NAVIGATE, BROWSER-PAGE-CHANGED,
    STATUS-TEXT-CHANGED, PROGRESS-CHANGED, UPDATE-UI, BROWSER-TITLE-CHANGED.

Other engine changes:

  * Added BrowserElement class to represent all web-browser-like elements.
    This includes foward/back/stop and set of standard events.
  * Added BrowserElementWx class to wrap the built-in wxHtmlWindow class.
  * Added BrowserElementIE class to wrap the wxIEHtmlWin class.
  * Support for vetoing events.
  * Added support for passing floating-point numbers to TCallbacks.
  * Modified PaintStage to only repaint the modified parts of the screen.
    This makes REFRESH slightly less likely to overdraw Widgets on the
    stage, but it does not fix the problem entirely.
  * Various bugfixes to wxIE library.
  * Added a function to convert DirtyLists to wxRegions.
  * Added support for opening pages in existing browser widgets from scripts.
  * Added basic support for forward, back, reload and stop buttons.
  * Added support for enabling and disabling forward/back/reload/stop buttons.
  * Fixed bugs which occurred when CLEAR-SCREEN and FILL-BOX were applied
    to transparent overlays with opaque colors.
  * Fixed bug which occurred when PNGs with 1-bit transparency were drawn
    onto transparent overlays.

0.0.13 - 6 Jan 2004 - emk

Basic drag & drop can now be implemented in Scheme.

  * Added support for (SET! (PROP elem name) value) in Scheme.  To support
    this on your templates, you need to implement an
    (ON PROP-CHANGE (name value prev veto) ...) handler.  Be sure to
    CALL-NEXT-HANDLER for properties you don't know about!  This API will
    probably change.
  * SET-ELEMENT-CURSOR! -> (SET! (PROP elem CURSOR) new-value)
  * Made several zone properties setable at runtime.
  * Overlays can now be moved.
  * Overlays no longer need to invalidate themselves when
    deleted--DrawingArea handles this internally.
  * Fixed some text-entry-related bugs.

0.0.12 - 5 Jan 2004 - emk

Graphics-related bug fixes:

  * Fixed bug where PNG's with 1-bit "mask" transparency were accidentally
    made transparent in too many places on 16-bit displays.
  * Fixed bug where opaque overlays with width N (where N*3 is odd) were
    reporting incorrect bmWidthBytes values under Win2K and causing raw
    access to look funny.

0.0.11 - 30 Dec 2003 - emk

TRANSPARENT OVERLAYS!  Added support for alpha-composited layers.  This
engine will require script updates:

  * SET-ZONE-CURSOR! has been renamed to SET-ELEMENT-CURSOR!.
  * RECT objects now (more) consistently exclude their right and bottom
    edges.  This may cause off-by-one errors in existing drawing code.
  * COLOR now represents opaque alpha values as 255 and transparent values
    as 0.  This is the opposite of the previous behavior.

Changes to Scheme Runtime:

  * Added :OVERLAY? and :ALPHA? to ZONE.  These allow you to create a
    rectangular zone with an associated drawing context (and optionally an
    alpha channel).  If :OVERLAY? is true, the zone must be rectangular.
  * Added (WITH-DRAWING-CONTEXT ZONE BODY...), which allows you to change
    the current drawing context.  Do not call IDLE within this form.
  * Added (DRAWING-CONTEXT-RECT), which returns the bounding rectangle
    for the current drawing context.
  * Added (COLOR-AT POINT), which returns the color at POINT in the
    current drawing context.
  * Fixed output routines to know about POINT, RECT and COLOR objects.
  * Support for storing POINT, RECT and COLOR objects in engine variables,
    including DEFINE/P.
  * Support for comparing POINT, RECT and COLOR objects with EQUALS?.

Changes to Tamale:

  * Added an Overlay class.  This is basically a square zone with its
    own (possibly transparent) DrawingArea and special hit-testing logic.
  * Switched from 0 opaque to 255 opaque, for performance and consistency
    with windows.
  * Support for TPoint, TRect, GraphicsTools::Color in engine variables.
  * TRect <-> wxRect conversion functions now reliably exclude right and
    bottom edges.
  * Added CompositeInto functions to Element and DrawingArea, for use with
    alpha-compositing.
  * DrawingAreas may now have alpha-channels.
  * Added alpha-channel support to DrawingArea::Clear.
  * Modified optimized versions of FillBox and DrawPixMap to use a
    templated transfer function, and added a transfer function for using
    them with DrawingAreas with alpha channels.
  * Fixed many bugs with arguments to DrawingArea::InvalidateRect.
  * Added support for retrieving pixel values.
  * Added support for pushing and poping drawing contexts.
  * Implemented a much-more-sophisticated list of dirty regions for use
    with the compositing.
  * Idling not allowed when a drawing context is pushed.
  * Replaced our single offscreen buffer with a compositing pixmap and
    and a background pixmap.
  * Invalidate an element's location when deleting it.

Changes to wxWindows:

  * Exported AlphaBlend from the MSW wxDC class, so we can do alpha blends
    between arbitrary DCs.
  * Removed wxBitmap::UngetRawData pre-multiplication code--there wasn't
    any matching code in wxBitmap::GetRawData, and many raw algorithms
    are much more efficient on pre-multiplied data.

0.0.10 - 19 Dec 2003 - emk

Lots of work to eliminate all Scheme memory allocation ("consing") while
idling.  This should fix video performance problems.

  * Added a cache of Scheme "buckets" (variable storage locations) so
    we don't have to allocate memory every time C++ needs to find something
    in the Scheme runtime.
  * Tweaked the idle interface so we don't need to call 'apply'.

Other changes:

  * Put in some stubs for allowing different font-sizes in edit boxes.

0.0.9 - 11 Dec 2003 - emk

  * Limited maximum chirp rate for new Geiger synth.
  * Added a ':multiline?' parameter to edit-box.  See 5Ltest_wx for samples.

0.0.8 - 17 Nov 2003 - emk, brian

  * Added SET-MEDIA-BASE-URL! function.  Pass it either a QuickTime-
    compatible URL or #f (to use the hard drive).
  * Major refactorings of Scheme runtime to help make it testable.
  * Fixed bug where api.ss didn't get recompiled when kernel.ss changed.
  * Split StageFrame out of Stage.
  * Split DrawingArea out of Stage.
  * Reduced coupling between nodes.ss and kernel.ss.
  * Made element deletion the responsibility of Scheme.
  * More work on Geiger audio synth.
  * Turned on QuickTime safe mode to avoid nasty performance problems
    with Boehm.
  * Merged TQTMovie changes from FiveL 3.4.

0.0.7 - 2 July 2003 - emk, brian

  * All known audio artifacts in Geiger synth and looping Vorbis
    playback have now been fixed.
  * PARAM renamed to PROP.
  * Major restructuring of template property binding.
  * EVENT-CHARACTER now returns a character, not a string
  * PROP and SEND no longer need their name argument to be quoted
  * Support for screenshots: (SCREENSHOT) will write the current screen
    to a file in the Screenshots directory
  * ON handlers may now return a value
  * Scheme elements don't need to have corresponding C++ elements
  * More or less everything can have an idle handler now
  * Added a MOUSE-MOVED event.
  * New TestCase classes based on xUnit.  These run within the engine.
  * Lots of improvements in build performance.

0.0.6 - 4 June 2003 - emk, brian

Audio work by emk:

  * Mono Vorbis audio supported.
  * Per-channel volume supported.
  * Looping Vorbis audio.
  * Basic real-time Geiger synth implemented.  It still has issues.

Polygon work by brian:

  * Added support for polygons (POLYGON point ...).
  * Added support for polygonal zones (ZONE name poly callback). Rects
    still work: (ZONE name rect callback) will convert the rect to a
    polygon.
  * Added support for copying polygon definition strings to clipboard
    using crosshair control. 

0.0.5 - 30 May 2003 - emk

A very primitive audio layer, with Vorbis support.  I'm making a release so
the media folks have something to play with.

  * Integrated portaudio audio output library.
  * Integrated libivorbisdec (a.k.a. "Tremor") integerized Ogg Vorbis
    audio decoder.
  * Added new VorbisFile class for loading Ogg Vorbis streams (incomplete).
  * Added new AudioStream class for streaming audio output.
  * Added VorbisAudioStream and SineAudioStream classes.
  * Refactoed IMediaElement interface out of MovieElement.
  * Added AudioStreamElement class.
  * New functions: VORBIS-AUDIO and SINE-WAVE.  These are mostly for
    testing at this point.
  * We no longer drop Vorbis samples during playback (I hope!).

0.0.4 - 28 May 2003 - emk, brian

  * Changed CARD syntax to (CARD name () body ...).
  * Allowed GROUP and SEQUENCE to have initialization code:
    (GROUP name () body ...).
  * Can define templates for card groups, cards and elements.
  * Can create temporary elements using CREATE.  These get deleted
    when exiting the card.
  * Can access template parameters directly, or by using PARAM.
  * DRAW-BOX now honors alpha value of color argument.
  * Event handling system moved into kernel.ss and redesigned.
  * Callbacks are now re-entrant.
  * New events: MOUSE-DOWN, MOUSE-UP, MOUSE-ENTER, MOUSE-LEAVE.
  * New functions: MOUSE-GRAB, MOUSE-UNGRAB, MOUSE-GRABBED?.
  * ZONE, MOVIE, HTML and EDIT-BOX now use element templates
    internally.
  * Third-party code with vague or unknown licenses should
    be pulled from the tree.

0.0.3 - 9 May 2003 - emk, brian

  * When switching from 3D to 2D, blit the Quake display into our
    offscreen buffer to avoid an ugly "cut to black".
  * Renamed PAUSE and RESUME to MOVIE-PAUSE and MOVIE-RESUME.
  * Modified the (REFRESH ...) command to do something useful in the new
    engine.  However, since there's no way to mark the screen as having
    been repainted, this leads to duplicate painting.  Fixing this
    is fairly hard.
  * Fixed loading of alpha channels and alpha channel memory
    allocation bug.
  * Implemented crossfades.  Use (REFRESH :transition 'crossfade :ms 500).
  * Implemented built-in timing of transitions, to make different machines
    more consistent.
  * Implemented more transitions: wipeleft, wiperight, wipeup, wipedown,
    pushleft, pushright, pushup, pushdown, toblack, fromblack.
  * Reimplemented FADE and UNFADE commands using timed transitions.
  * When in cross-hair mode, right-clicking will copy the current point
    to the clipboard.  Shift-right-clicking will copy the previous and
    current points to the clipboard as a rectangle.
  * Added support for saving current offcreen buffer. Use
    SAVE-GRAPHICS and RESTORE-GRAPHICS. To save or restore a
    particular rectangle, use (SAVE-GRAPHICS :bounds (rect ...)) or
    (RESTORE-GRAPHICS :bounds (rect ...))
  * Very naive implementation of screen resizing--this has no sanity
    checks, no warnings, and probably dies a miserable death if
    multiple monitors are involved.  However, it does fix the bug
    where windows would not be properly centered in full-screen mode.

0.0.2 - 3 May 2003 - emk, brian

Now that we're producing real builds again, we're going to start keeping
this file up to do date.

What's happened since last update:

  * The engine was renamed to Tamale.
  * We added lots of new features.  It's beginning to resemble a real
    program.

New in this build:

  * Sequences, alpha channels, convenience features in the GUI,
    support for Swindle, pausing and resuming movies, etc.

0.0.? - emk

Primitive support for running Quake 2 from within wx5L.

  * Added primitives to show/hide widgets, and perform some other
    basic operations.
  * Replaced background wxPanel with wxWindow to 
  * Added Quake2Engine class.
  * Added support for Reload Script when Quake is running.
  * Added many primtives for interacting with Quake.
  * Added support for attaching Scheme callbacks to Quake commands.

3.5.11 - 19 Nov 2002 - emk

Regular 5L:

  * Wrote code to release script resources before retrying a failed
    script load.

wx5L:

  * Added wx/src/AppConfig.h, which can be used to enable and disable
    various GUI features on a per-platform basis.
  * Made the LocationBar class inherit from either wxComboBox or
    wxTextCtrl, depending on which is more likely to work on a given
    platform.

3.5.10 - 6 Nov 2002 - emk

wx5L:

Working on making wx5L portable.  The Windows wx5L build is slightly
broken; I'll fix it once the portable code is happy.

  * Added FIVEL_NO_MOVIES define to supress use of QuickTime in wx5L builds.
  * Refactored MovieWindow into two classes: MovieWindow, which does
    nothing, and MovieWindowQT which does all the work.  Refer to
    MovieWindowNative to get the right one on a given platform.
  * Wrote scripts to convert *.ico and *.bmp files to *.xpm files.
  * Added AppGraphics.h and AppGraphics.cpp, which import xpm files.
  * Checked in some other utility scripts, and updated 5L-stats.

Regular 5L:

Added type information to 5L variables, and replaced (var ...) with a more
powerful form of (define ...).  These changes should make Scheme more
pleasant for content authors.

  * TVariable now stores type information.
  * Added SetTyped primitive, and replaced VariableExists with
    VariableInitialized.
  * Added support for "symbol" arguments to primitives.  These correspond
    to Scheme symbols, and should eventually be used when a primitive
    argument refers to a variable name (or one a small, fixed set of strings).
  * Fixed bugs in TVariable's unsigned integer handling.
  * Removed TYPE argument from call-5l-prim, engine-var, etc.
  * Renamed DEFINE-PERSISTENT-VARIABLE to DEFINE/P.
  * Updated fake-engine.ss to mimic new engine, and fixed bug in tool.ss.

3.5.9 - 31 Oct 2002 - emk

  * New wxWindows front-end now officially added to the build tree.
    This is still massively incomplete, but it's on its way.
  * Lots of compilation flag tweaks, to get all the various Win32 projects
    on the same page re: threads, RTTI, exceptions, etc.
  * CryptTool removed as first step in preparing for open souce release.
    This will simplify our legal issues a bit.
  * Linux build fixes.
  * Fixed bug where MacOS X 5L always played the same video from the CD.
  * Converted all *.rsrc and *.PPob files to *.r files, and included
    instructions on converting them back and forth.  This will allow us
    to play a bit more nicely with CVS, and eliminate all but a few
    files with resource forks from our CVS repository.
  * Source tree re-organization:
    - Common/libs -> libs
    - Common/freetype2 -> libs/freetype2
    - Rename Common/Runtime/5L/*.ss to have lowercase names
    - Linux, Mac, Win32 build fixes

3.5.8 - 15 Oct 2002 - emk

Engine:

  * The Windows engine now reloads scripts in the same fashion as the
    Mac engine--if a load fails, you get a chance to retry it.
  * Log files get flushed after every line.
  * The LOG and SCHEMEIDLE primitives are no longer logged, to reduce
    clutter in Debug.log.
  * Fixed tons of bugs in places where the Windows engine assumed it
    had a TInterpreter object, but didn't (i.e., lots of "sInstance"
    assertions are gone).
  * Added support for measuring text without drawing it.
  * Added support for checking whether an engine variable is initialized.
  * Made sure LCursor initializes mForceShow.

Runtime:

  * Support for compiling *.ss files to *.zo files automatically
    (incomplete--it only handles modules loaded with REQUIRE right now).
  * Support for deferring code until the engine is in a safe place to
    run it.  This means that you can call VIDEO, INPUT, etc., from
    within a callback.
  * The syntax of 'for' loops has been simplified.
  * Explicit support for using stylesheets with the INPUT command.
  * Added 'card-exists?' predicate.
  * Fixed bug in 'member?'.
  * Added support for using (var ...) declarations within 'lambda', 'define'
    and 'let'.
  * Added support for initializing engine variables.
  * Made call-5L-prim handle return values of non-string types gracefully.
  * Fixed bugs causing centered and left-aligned text to be measured
    incorrectly.
  * Added a hook system based on Emacs.

3.5.7 - 9 Oct 2002 - emk

Engines built from this code will require script changes.

  * Scheme: Changed 'for-each-item' to 'foreach', and added 'for'.
  * Added extract-docs.pl, which generates HTML manuals.
  * Added many new test cases for the new 5L language.
  * Fixed minor bugs in CryptStream*.*, as discovered by valgrind.
  * All primitives which used to take palette indices now take RGB colors.
  * Old 5L: Added DEFPALETTE command for declaring palettes without
    BMP files.  This provides backwards compatibility for old code.
  * Removed Windows cursor-clipping code because it was occassionally
    immobilizing the cursor completely.

3.5.6 - 3 Oct 2002 - emk

  * Refactored CHeader in the same fashion as Header and TStyleSheet,
    which should allow headers (and therefore input) to be used from
    Scheme.  This may also fix a redoscript problem in old5l.
  * Merged "cursor during video" fix from 3.4.2.
  * Built new Windows engines with the MzScheme 202 code.  You'll
    need to get the newest version of the appropriate libmzsch and
    libmzgc DLLs.

3.5.5 - 2 Oct 2002 - emk

Preliminary MzScheme support for Macintosh engine.  DO NOT BUILD THE
NON-CARBON POWERPC BUILD!  WHEN RUN UNDER OS X'S OS 9 EMULATOR, IT WILL
CORRUPT YOUR OS 9 SYSTEM FILE.

For legal reasons, this Macintosh engine SHOULD NOT BE DISTRIBUTED outside
of IML until we do our open source release.  It's statically-linked against
the LGPL'd MzSchemeLib, which would require us to jump through some
annoying hoops if we wanted to ship proprietary binaries.

User-visible changes:

  * This engine supports both legacy 5L and Scheme.
  * No PowerPC build.
  * No more start scripts.  Move everything into your main script.
  * No more switching between scripts.
  * CD ejection and fades are gone, thanks to the fact this build is
    Carbon-only.

Engine changes:

  * Created CodeWarrior project for MzSchemeLib, to avoid the pay-per-view
    cage match between MPW StdCLib and Metrowerks Standard Library over
    who's going to link with what.
  * Fixed MzScheme's call to PBGetCatInfo to work under Carbon.
  * Added code to explicitly set Boehm GC stack base on the Macintosh.
    Boehm can't figure this out without help, and will crash on startup.
  * Namespace fixes to make things compile on the Mac.
  * Made a mess of the MzSchemeLib MPW build infrastructure trying to get
    things to work.  I'm checking in my hacked-up version because (1) it
    marginally works and (2) we might need it again someday.
  * Removed a number of unused files with licensing problems, and sorted
    the rest of the problematic files into categories.
  * Changed event-handling model to give the TInterpreterManager object
    control, instead of the traditional PowerPlant::LApplication::Run
    method.  This requires us to roll our own version of Run and do some
    tricky event handling in CMac5LApp::MacIdleProc.  But it also means the
    Mac engine now supports arbitrary interpreters.  This change has lots
    of consequences, most of them complicated--and it may affect stability.
  * CPlayerView is now more careful about checking whether a TInterpreter
    object actually exists before calling methods on it.
  * Renamed MakeNewIndex methods to ProcessTopLevelForm.
  * Moved all old5l-related files into Mac/Source/lang/old5l.
  * Moved interpreter-managing code into TMac5LInterpreter.{h,cpp}.
  * Moved file-related primitives into TMac5LPrimitives.cpp.
  * Shift-scripts are gone.
  * Ripped out support for switching scripts.
  * Reimplemented script reloading, exiting, etc., using the
    TInterpreterManager interface.
  * Lots of changes to the Macintosh project files.
  * Updated Windows interpreter to newest MzScheme release.
  * Fixed the Linux build.

Headers (and therefore text input) are only available to the old 5L
language.  This will change soon.

3.5.4 - 21 Aug 2002 - emk

Engine:

  * Moved many source files from Common to Common/lang/old5L, and from
    Win32/FiveL to Win32/FiveL/lang/old5l, including the index system, the
    parser and stream classes, the crypto classes and the file I/O classes.
  * Broke the dependencies between Header and TIndex, in a fashion similar
    to what I did for TStyleSheet in 3.5.1.  This means we can call
    INPUT from Scheme, which more-or-less completes the Scheme primitives.
  * Made sure that header and stylesheet names were case insensitive.

Runtime:

  * Implemented a DrScheme IDE plugin with fairly good support for the
    5L language.  We may need to tweak this slightly later on.
  * Fixed the 5L-Loader and 5L-tool to initialize namespaces in the same way.
  * Implemented and documented lots of nice, high-level wrappers around
    the most error-prone of the low-level primitives.
  * Implemented DEFINE-STYLESHEET, which allows an author to declare
    headers and stylesheets at the same time, and to base them off earlier
    stylesheets.
  * Merged in Brian's WITH-TRACING macro.
  * Merged in Brian's support for variable interpolation.

3.5.3 - 18 Aug 2002 - emk

Changes to support the rapidly-growing test suites.

Engine:

  * Renamed _error variable to _errorcode to avoid conflicting with the
    _error variable used by the 'video' command (which we'll probably
    need to clean up sometime, but that's life).  This will affect
    scripts which call the BROWSE command, but not much else.

Runtime:

  * Implemented DEFINE-ENGINE-VARIABLE, which provides transparent
    binding between Scheme and 5L variables.
  * Added *TEXT-X*, *TEXT-Y*, *GRAPHIC-X* and *GRAPHIC-Y* variables,
    which are bound to _INCR_X, INCR_Y, _Graphic_X and _Graphic_Y.
  * Added WHILE and FOR-EACH-ITEM loops.
  * Added HAVE-5L-PRIM? and REFRESH functions.
  * Modified JUMP function to use JUMP primitive when available, so video
    gets killed when jumping between cards.
  * Refresh the screen at the end of each card.

3.5.2 - 18 Aug 2002 - emk

  * Modified the TSchemeInterpreter class to make intelligent use of
    namespaces and modules.
  * Fully modularized the runtime, and made the lispish language extensions
    available.  The "lispish" code currently belongs to me (and is released
    under the LGPL), but I'll be happy to relicense it to the Trustees.
  * Got redoscript to work--we no longer attempt to restart the entire
    Scheme interpreter; we merely throw away a sandbox.
  * Moved the code for resetting stylesheets out of the TWin5LInterpreter
    and into the main Win32 engine.

3.5.1 - 16 Aug 2002 - emk

Added support for defining stylesheets in Scheme.  This means that Scheme
can draw text!  (The INPUT doesn't work yet, because this relies on the
separate, not-yet-fixed header system.)  This involved lots of refactoring.

  * Created TTopLevelFormProcessor as an abstract superclass of
    TIndexManager, and modified TParser to use TTopLevelFormProcessor.
    This allows the legacy 5L language to contain non-TIndex tlfs.
  * Implemented a TPrimitiveTlfProcessor class, which allows
    top-level-forms to be implemented as calls to regular 5L primitives.
  * Yanked our ValueOrPercent support from TStream into the
    TArgumentList superclass, and implemented it for all TArgumentList
    subclasses.  This allows non-5L languages to specify the funky 
    percentage arguments used by the DEFSTYLE command.
  * Removed all TIndex/TIndexManager support from TStyleSheet, and
    reimplemented it using an STL std::map.  This breaks the dependencies
    between stylesheets and the old 5L interpreter.
  * Implemented a DEFSTYLE primitive.

3.5.0 - 16 Aug 2002 - emk, zeb

Preliminary Scheme support for Windows.  The Macintosh build is broken
until Brian updates the event loop to use a TInterpreterManager object
and figures out how to get the mzscheme libraries building.

  * Imported Boost library (from http://www.boost.org/) into CVS.
  * zeb: Moved some primitives from TMacPrimitives.cpp and TWinPrimitives.cpp
    to TCommonPrimitives.cpp and T5LPrimitives.cpp.
  * zeb: Added a GET primitive.
  * zeb: Cleaned date stuff out of LUtil.{h,cpp}.
  * First work on Scheme.
  * Overhaul of the Windows event handling system.
  * The interpreter now calls the idle loop, instead of vice versa.
  * Redoscript is now handled by a TInterpreterManager object.
  * It's no longer possible to switch between scripts.
  * Updated TSchemeInterpreter to use new event loop system.
  * Filled in lots of missing Scheme support.
  * Converted kernel.ss to use an internal state machine.
  * Implemented various timer systems.
  * Preliminary Windows integration.
  * Fixed nasty "Minimize when backgrounded" behavior when running in
    windowed mode (this was driving me crazy while debugging).
  * Ported 3.4.1 changes to the development branch.

3.4.2 - 28 Sep 2002 - emk

  * Fixed bug where cursor was visible during movie playback.  This bug
    was introduced when the movie controller patches were added.

3.4.1 - 14 Aug 2002 - emk

Language bugfixes/enhancements/changes for HIV Prevention Counseling.  I
removed some deeply-buried bugs in TStream and elsewhere, so please test
this build thoroughly.

  * New entities: &shy;, &nbsp;, and &radic;.  I've also added
    &check; and &cross;, but we don't have the necessary font support yet.
  * TStream now handles whitespace rationally.  String literals are
    parsed verbatim, and the old "randomly munge whitespace" behavior
    has been fixed.  Most of the other changes are necessary consequences
    of this change.
  * Verbatim CR, LF and TAB characters in strings will be passed through.
    This may affect screen layout.
  * The (get ...) primitive has been backported from 3.5.
  * The '&' syntax has been removed.  Instead of '&foo$bar', you should
    now write '$(get foo$bar)'.
  * Entities don't need to be escaped any more: \&amp; -> &amp;.

Thanks to this cleanup, it was possible to implement several much-wanted
features without too much work:

  * New primitives: WHEN, UNLESS and WHILE.
  * BODY has been renamed to BEGIN, and longer prematurely evaluates all
    the variables in nested expressions.
  * Debug log improvements.

3.4.0 - 26 July 2002 - emk

  * Updated version numbers for official stable release!
  * Macintosh compilation fix in FileSystem.cpp.

3.3.21 - 26 July 2002 - zeb

  * Added FileSystem::ExistenceCheck, which we use to check for the
    existence of various files during the startup process (bug #937).

3.3.20 - 26 July 2002 - emk

A QA binge, thanks to RedHat's memprof, Bruce Perens' Electric Fence,
and Rational's Purify.

  * Linux build fixes so I can run memprof and Electric Fence.
  * Fixed a bug in TStream::GetStringArg when called on an empty stream.
    This is probably why we were seeing weird results when CHeader called
    TStream::more() too many times.
  * Fixed a buffer-overflow bug in TLogger when logging large messages.
  * Squashed a bunch of memory leaks in CryptStream.cpp.
  * Made new CryptStream auto_ptr code work under Windows.
  * PURIFY: Fixed memory leak in TBTree::Add of duplicate node.  We now
    notify the user if there are duplicate cards, macros, etc.
  * PURIFY: Fixed memory leak in TBTree destructor.
  * PURIFY: Fixed memory leak in ConfigManager destructor.
  * PURIFY: Fixed memory leaks when deleting DIBs.
  * PURIFY: Made sure we deleted offscreen GWorld when exiting.
  * PURIFY: Fixed memory leak in LBrowser.
  * PURIFY: Fixed memory leak in LFileBundle.
  * PURIFY: Fixed uninitialized memory reads when View methods were
    called before View::Init.
  * PURIFY: Made View::Draw a no-op before View::Init is called.
    (It seems that Windows causes us to call Draw too early.)
  * Added TOUCHCOUNT, TOUCHCOORDS and TOUCHACTIVATE commands so Douglas
    can build an automatic test monkey.  These are Win32-only, because
    the Mac touchzone system needs an overhaul and I don't want to
    mess with it right now (bug #1076).
  * Added StValueRestorer<> template class which can save and restore
    the values of variables in an exception-safe fashion.
  * Began code audit for exception safety (bug #1074).

3.3.19 - 24 July 2002 - emk

  * Cleaned up Win32 5L.log (bug #1057).
  * We now print the glyph cache size every 100K (bug #969).

3.3.18 - 23 July 2002 - emk

  * Forward-ported QtComponentVersion to the Mac (bug #1054).
  * Fixed redoscript/keybind race condition (bug #1036).
  * Added a top-level try/catch block on the Mac (bug #955).
  * Added error checking in Mac BROWSE (bug #1070).
  * Enlarged our growzone a bit, and made sure it's working.  This will
    help us determine if we have memory usage problems (bug #969).

3.3.17 - 23 July 2002 - emk

  * Fixed RETURN in macros (bug #1053).
  * Fixed typography exception when missing buttpcx graphic (bug #1039).
  * Made Win32 BROWSE return an error if it fails (bug #793).
  * Forward-ported QtComponentVersion to Win32 (bug #1054).
  * Performance tuned Win32 textaa (bug #933).
  * Added lots of try/catch wrappers on Win32 (bug #955).

3.3.16 - 19 July 2002 - emk

  * Fixed "b" parameter to defstyle (bug #1052).
  * Fixed Mac/Win32 engine to log missing macros to Debug.log (bug #1060).
  * Fixed Windows macro recursion (bug #1053).
  * Fixed debug-log discrepencies (bug #1064).
  * Fixed logging of Windows macro arguments (bug #1065).

3.3.15 - 17 July 2002 - brian

  * Fixed excessive error messages for missing button graphics (#1039).
  * This bug might still occur on Windows; it needs to be looked into.

3.3.14 - 15 July 2002 - brian, emk

  * Fixed GWorld flashing (bug #930).
  * Windows 3.3.13 fixes ported to the Macintosh.

3.3.13 - 15 July 2002 - zeb, emk

  * Language change: (IF cond true_cmd false_cmd) now takes arbitrary
    expressions for 'cond'.  The following new primitives have
    been added: AND, OR, NOT, contains, =, <>, <, >, <=, >=.
  * Added a new (LOG filename msg) command, which allows the programmer
    to write to "5L", "debug" and "MissingMedia" logs.
  * Major logging improvements: All primitives are now automatically
    logged in a standard format (bug #1003).
  * Adjusting of coordinates using origin is now logged.
  * Callbacks are now logged in a much more useful fashion.
  * Old arithmetic primitives now return a value (add, sub, div).
  * Added MakeQuotedString to TTemplateUtils and wrote a matching test suite.

3.3.12 - 10 July 2002 - brian

  * Made textAA and text log coordinates of bounding box (bug #979).

3.3.11 - 7 July 2002 - emk

Ported forward 3.2.0.x fixes (bug #1008).

  * Ported Win32 QuickTime 6/VP3 bugfix forward from 3.2.0.x.
  * Ported Win32 QuickTime 6 gamma bugfix forward from 3.2.0.x.
  * Ported Mac QuickTime 6 gamma bugfix forward from 3.2.0.x.
  * Ported Win32 line drawing bugfix forward from 3.2.0.x.
  * Fixed Win32 (touch ...) command to highlight touchzones more like the
    Macintosh.  (It now redraws the unhighlighted graphic at the end of the
    highlight sequence.)

3.3.10 - 7 July 2002 - zeb

  * Added a new Release-Notes.txt file.
  * Fixed a bug which caused LFileBundle to die with an assertion
    failure when importing an empty file.
  * New feature: Modulo primitive.  5L now supports Modulo(x,y).
    Syntax is (% x y).

OLDER LOGS, RECOVERED FROM CVS
------------------------------

3.3.9 - emk

  Highly experimental engine which makes _INCR_X, _INCR_Y, _Graphic_X and
   _Graphic_Y relative to the current origin.  This will break macros in
   existing code!

3.3.8 - emk

  5L language improvements, including nested expressions, return values and
  new primitives.

   * Expressions can now be nested: '(set x $(+ 2 $(* 3 5)))' will
     set 'x' to 17.  Nested expressions should be indented as follows:

       (set x $(+ $really_big_variable_1
                  $really_big_variable_2))

     ...that is, arguments should _stack in a column_.  I will be
     extremely anal about this if I'm reading your code.

   * '(return ...)' now takes an optional argument, which will be
     returned from the macro.  So you can define your own functions, too.

   * New primitives: +, -, *, /, truncate, float+, float-, float*,
     float/, strlen, substr, findsubstr, length, nth, haskey, getval.

  A note on Lisp naming conventions--when you create a new "data structure"
  type, you should generally name functions as follows:

   # Define a type 'pt' with members 'x' and 'y' using lists.
   (macrodef pt (return ($1 $2)))
   (macrodef pt-x (return $(nth 0 $1)))
   (macrodef pt-y (return $(nth 1 $1)))

   # Alternative implementation of a type 'pt2' using associative lists.
   # (You couldn't pass 'pt2' to a built-in command, but it's a nice small
   # example.)
   (macrodef pt2 (return (x $1 y $2)))      # (pt2 10 20) => (x 10 y 20)
   (macrodef pt2-x (return $(getval $1 x))) # (pt2-x ...) => 10
   (macrodef pt2-y (return $(getval $1 y))) # (pt2-y ...) => 20

  The function 'pt' is called the "constructor", and the functions 'pt-x'
  and 'pt-y' are called "accessors".

3.3.7 - emk

  Debug log updates, and error message if 5L is run without
  Mac5L.config or other support files.

3.3.6 - emk

  Fixed problems with BUTTPCX (and other?) highlighting.

3.3.5 - emk

  Merged the 'FiveL_3_3_4_refactor_lang_1' branch back into the trunk.
  This branch contained the following enhancements:

   * Most of the communication between the interpreter and the
     engine now goes through the interfaces defined in
     TInterpreter.h and TPrimitive.h.  Among other things, this
     refactoring makes will make it easier to (1) change the interpreter
     from 5L to Scheme and (2) add portable primitives that work
     the same on both platforms.
   * A new system for handling callbacks.

  I also slipped in the following, unrelated enhancements:

   * MacOS X fixes.  Classic Mac5L once again runs under OS X, and
     there is a new, not-yet-ready-for-prime-time Carbonized build.
   * Bug fixes from the "Fix for 3.4" list.

3.3.4.12 - emk

  Last build of the 'FiveL_3_3_4_refactor_lang_1' branch
  before merging.

3.3.4.11 - emk

  Refactored Mac code to move primitives from CCard.{h,cpp} to
  TMacPrimitives.{h,cpp}, and break most of the remaining dependencies on
  the 5L interpreter.

  Language changes: LOADPICK, RVAR and RNODE are gone.  I've also disabled
  the Mac PAUSE command until Douglas tells me how it should work.

  Testing: Please beat *very* hard on this build, and pay special attention
  to WAIT, NAP, TIMEOUT, and similar commands.

  Next up: I plan to merge this branch into HEAD tomorrow.

3.3.4.10 - emk

  Debug log message improvements on the Mac.

3.3.4.9 - emk

  Fixed _Origin_X, _Origin_Y on Windows, and added a "default style"
  parameter to "defstyle" on both platforms.

  The new syntax:

   (defstyle sample (Nimbus Roman No9 L) 12 r left 0xF0F0F000 0xFFFF0000)

   ...where r = "regular", b = "bold", i = "italic" and bi = "bold italic".

3.3.4.8 - emk

  Added (BODY ...) command on Mac, fixed arguments of BUTTPCX, TOUCH,
  and KEYBIND to match Win32 engine, and refactored Mac engine to more-or-less
  respect the TInterpreter interface.

  Things to test: REDOSCRIPT, redo-REDOSCRIPT (feed REDOSCRIPT a bogus script,
  try to fix it, then run REDOSCRIPT again), TOUCH, BUTTPCX, ORIGIN.

  Some low-level details:

   - Added a KillCurrentCard method to the TInterpreter interface.  This
     works a lot like Pause, but it cannot be resumed.
   - Added a rough-cut TMac5LInterpreter class (with some methods stubbed
     out, because they are not needed on the Mac--we should look at
     this API in detail and formalize it sometime after 3.4).
   - Modified CTouchZone to take TCallback objects.
   - Modified CPlayerView's keybinding support to take TCallback objects
     (and to use a std::map instead of a PowerPlant list class).
   - Began to separate special forms (IF, BODY, EXIT, RETURN) from other
     commands.
   - Moved ReadSpecialVariable_* methods out of CCard and into CMac5LApp.
   - Made sure CMac5LApp::mReDoReDo got initialized to false.
   - Merged OpenScript and OpenScriptAgain into one function.

3.3.4.7 - emk

  Carbonization of Mac build, support for running non-Carbonized build
  in MacOS X's OS 9 emulator, and basic support for 5L.prefs on the Mac.  The
  Carbon build isn't yet ready for prime time--see BugHunt for details--but it
  is good enough to use for engine development.

  * Language changes

   - CHECKDISC is gone; use CHECKVOL instead.
   - EJECT is disabled in the Carbon build, because Carbon has no way to
     identify CD drives reliably.  EJECT still works in the regular build.
   - Gamma fades are ignored in the Carbon build.
   - KEYBINDs must now be accessed with the Command key only--not Option.

  * Things to test

  Please be hugely brutal to 5L; this is a big update.

   - 8-bit systems, palettes, ORIGIN, EJECT on the non-Carbon build.

  * Internal changes

   - TException class (and all subclasses) now take a __FILE__ and __LINE__
     parameter.  This is ugly, but it allows me to debug 5L exceptions even
     without a working debugger (under the OS 9 emulator, for example).
   - FileSystem::Path::(DoesExist|IsRegularFile|IsDirectory) now rely on
     native MacOS File Manager calls instead of the broken MSL stat()
     function (which fails in the OS 9 emulator).
   - The ImlUnit test harness flushes its output more often.
   - Many data structure accessors (and such functions as c2pstr) have been
     replaced by their Carbon equivalents.
   - We now use PowerPlant accessors to get at the QuickDraw globals.
   - We now use PowerPlant calls in place of ValidRect and InvalRect.
   - Some very nasty code which set the palettes of our offscreen GWorlds
     has been removed (offscreen GWorlds have CLUTs, not palettes!).
     The various drawing commands now use gPaletteManager to map indexes
     to RGBColor values, and RGBForeColor to set the color--no more calls
     to ::PmForeColor on offscreen GWorlds, thank you!
   - The CMenuUtil code (which used low-memory system globals to hide
     and show the menu bar) has been removed entirely and replaced by
     calls to HideMenuBar and ShowMenuBar (which are present in 8.5 and
     Carbon).  This is much simpler, nicer, more portable and safer.
   - A bunch of code which had been disabled with #ifdefs has been
     removed entirely.  This mostly related to palettes and an obsolete
     version of the fade code which used GWorlds.
   - Code which used ROM-based KCHR resources to map option keys back to
     their unmodified key caps has been removed.  This means KEYBINDs
     can only be accessed using the Command key.
   - We assume Carbon systems always support the HFS file system (duh).
   - We use PowerPlant glue to access either StandardFile or Navigation
     Services, under OS 8/9 and Carbon, respectively.
   - Some old subroutines in CModuleManager appeared to have been
     snarfed from More Files, an old Mac utility library.  These have
     been moved into MoreFiles.{h,cpp}.

  * Known Carbon Problems

  Fades, ejecting CD-ROMs and playing QuickTime movies are all broken in
  the Carbon build.  Douglas has found a problem with ORIGIN.  It looks
  like we should continue to ship the OS 9 build for use with MacOS X,
  at least for next few months.

3.3.4.6 - 2002/06/12 19:42:36 - emk

  Fixed bug where the origin didn't get restored after each macro
  call.  (This bug was introduced in 3.3.4.5.)

3.3.4.5 - 2002/06/12 19:02:51 - emk 

  Moved Do* commands from Card.{h,cpp} to TWinPrimitives.{h,cpp},
  and broke the remaining dependencies between these primitive commands and
  the current 5L interpreter.  The TInterpreter and TPrimitives interfaces
  are now quite mature.

  *** Please beat very, very hard on this build.  I don't anticipate
  further changes to the Windows engine for a while. ***

  REMOVED COMMANDS: kill (use still), loadpick (use loadpic)
  NEEDS TESTING: origin w/macros, other uses of origin.  5L now
   sets the origin to 0,0 whenever it begins a new card, which
   should produce behavior identical to the old system, unless
   I've overlooked something.
  NEEDS TESTING: make sure all the commands are available, and
   have the right names.  I've checked this a dozen times
   by eye, but I might have overlooked something.

  The only remaining dependencies between the interpreter and the rest of
  5L are in the Header and TStyleSheet classes.  I'm postponing this last
  bit of cleanup until after 3.4.  Up next: Repeat the 3.3.4.{1-5} changes
  for the Macintosh.
 
3.3.4.4 - 2002/06/11 18:15:31 - emk

  Partial separation of primitives from interpreter, and
  various 5L language enhancements related to callbacks.

   - Finished fleshing out TArgumentList, added support for callbacks.
   - Made all built-in primitives access their arguments through the
     TArgument interface.
   - Implemented a BODY command.
   - Changed how the TOUCH, BUTTPCX and KEYBIND commands parse their
     callback arguments.  See below for details; you'll have to change
     some code.  This was necessary to move callback parsing into
     TStream's implementation of the TArgumentList interface.

  5L Language Changes
  -------------------

   * (KEYBIND ...) now takes an arbitrary command instead of a card name.
     As with TOUCH and BUTTPCX, variables are evaluated when the
     keybind is installed, not when it is invoked.  Examples:

       (keybind f (jump foo))
       (keybind a (add x 10))

   * You can now run a series of zero or more commands using (BODY cmd...).
     This should work with IF, TOUCH, BUTTPCX and KEYBIND.  Example:

       (body
         (set x 10)
         (set y 20))

     Commands such as WAIT, JUMP, NAP, etc., will not do what you expect
     unless they're the last statement in a BODY.  This is caused by the
     low-level design of the interpreter, and is non-trivial to fix.

     RETURN is also not BODY-friendly.

     When you pass a body to IF, TOUCH, BUTTPCX or KEYBIND, all the
     variables in the body will be evaluated *before* any code is run!

   * The arguments to BUTTPCX and TOUCH have been rationalized after
     consultation with Douglas.  The commands now work as follows:

       (TOUCH rect cmd [cursor [picture [point]]])
       (BUTTPCX picture point header label cmd [cursor])

     Note that the second callback has disappeared from both TOUCH and
     BUTTPCX; use BODY instead.

3.3.4.3 - 2002/06/10 17:52:48 - emk

  Added a TArgumentList class in TPrimitives.  This class provides
  an abstract interface to argument list parsing, and replaces parts of
  TStream.  This will allow us to begin breaking dependencies between
  the primitives and the nasty parsing gunk in TStream.

3.3.4.2 - 2002/06/05 20:42:29 - emk

  Broke Win5L dependencies on TIndex file by moving various pieces
  of code into TWin5LInterpreter.  Windows 5L now accesses the interpreter
  through a well-defined API.  Changes:

   * Removed many direct and indirect #includes of TIndex.h.
   * Added a TInterpreter method ReloadScript, which can be called by the
     higher-level ReDoScript command.
   * Checked in some files which should have been included in the 3.3.4.1
     checkin--these files contain the initial refactorings of Card and Macro
     callsites to go through the TInterpreter interface.

  Up next: Refactor various Do* methods out of Card and into a procedural
  database.

3.3.4 - 2002/05/29 13:58:10 - emk

  Fixed various crash-on-exit problems (including those in TBTree,
  TIndex and TLogger::FatalError), and reverted the Win32 _INCR_Y code
  to the behavior that shipped with Genetics.

3.3.3 - 2002/05/15 11:05:18 - emk

  Merged in changes from FiveL_3_3_2_emk_typography_merge branch.
  Synopsis: The Common code is now up to 20Kloc, anti-aliased typography is
  available, and several subsystems have been refactored.  For more
  detailed descriptions, see the CVS branch.

  The merged Mac code hasn't been built yet; I'll take care of that next.

  Added support for passing a "(pcent ...)" argument to "defstyle" to
  specify leading as a percentage of the base font size (and cleaned up a
  few minor test suite issues).

3.3.2.7 - 2002/05/01 07:10:49 - emk

  Fixed assertion failure on "Special Variables" screen, fixed
  missing bullets, and added "\&Delta;" and "\&delta;" entities for
  use with the (textaa ...) command only.

3.3.2.6 - 2002/05/01 03:27:02 - emk

  First Windows engine with (textaa ...) command.

   - Implemented a primitive, slow Image::DrawPixMap command that uses
     ::GetPixel and ::SetPixel to do alpha blending (shudder).  Strangely
     enough, it's about as fast as the somewhat optimized Mac routines.
     Anyone got a good GDI book?

   - Fixed several assertion failures.

  Known problems:

   - Occasional assertion failure on exit.  The reference-counting on
     TIndexFile claims it's getting dereferenced too many times.  This is
     an old bug; all the TBTree and TBNode classes are pretty dodgy.

   - Assertion failure on "Special Variables" screen in 5Ltest.  This is
     caused by overlong lines.

3.3.2.5 - 2002/04/30 07:57:24 - emk

  Port Win32 code to use the 20Kloc of Common code that now
  exists.  The (defstyle ...) command should work, but (textaa ...) isn't
  available yet.

  Next up: Implement the (textaa ...) command and the low-level
  GraphicsTools::Image::DrawBitMap.

3.3.2.4 - 2002/04/29 06:29:58 - emk

  Contains first set of performance tweaks, and fixes problem with
  assertion failures after reload and on CME screens.

3.3.2.3 - 2002/04/26 11:31:01 - emk

  Fixed highlight shadow color to default to regular shadow color (instead
  of highlight color, which is obviously wrong).

3.3.2.2 - 2002/04/26 08:51:21 - emk

  First experimental engine with (textaa ...) and (defstyle ...) commands.

  Changes:

   - Ported new TEncoding template class to the Mac.

   - Updated TStyleSheet to provide bug-for-bug compatibility with the way
     backslashed escaped sequences are processed.

??? - 2002/04/23 11:29:47 - emk

  Prepended "VERSION_" to the version-related preprocessor defines, because
  this way is (1) nicer and (2) matches the Mac engine's preprocessor
  defines.

??? - 2002/04/19 11:20:13 - emk

  Start of the heavy typography merging work.  I'm doing this on a branch
  so I don't cause problems for any of the other developers.

  Alpha-blend text colors.

  Merged Mac and Windows versions of several files into the Common directory.
  Not all of these work on Mac and/or Windows yet, but they're getting there.
  Primary sources for the merged code are:

   Win/FiveL/LVersion.h -> Common/TVersion.h
   Win/FiveL/LStream.h -> Common/TStream.h
   Mac/Source/CStream.cp -> Common/TStream.cpp
   Mac/Source/CStreamTests.cp -> Common/TStreamTests.cpp

  TStream changes:

   * The TStream code now uses a callback to variable values.  This will
     probably go away once Variable and CVariable get merged.
   * Input operators for std::string and GraphicTools::Color.

  Isolated Windows-specific code in TLogger.*, in preparation for a big merge.

   * Added a portable function to set up logging.
   * Fixed the logging code to use the portable FileSystem library.
   * Made FatalError actually quit the application.

  Turned off the FiveL namespace on FIVEL_PLATFORM_OTHER, so we can debug
  with GDB, which has a few minor but painful namespace issues.

  TString changes:

   * Made sure we can convert from std::string to a TString.
   * Added some more assertions.
   * Fixed bug in various operator= methods which would allow the string's
     internal data pointer to be NULL.
   * Changed operator[] and operator() arguments to be 'int' instead of
     'int32' to avoid nasty compiler warnings.

  Typography::Style changes:

   * Added a "ShadowOffset" field that specifies the offset of the
     drop shadow.
   * Added an operator== for testing.
   * Added a ToggleFaceStyle method for toggling specified face style bits.

  Typography::StyledText changes:

   * Added a method to append a single character.

  Other Typography changes:

   * Made FaceStyle an int, not an enum, so we can do bit math with it.
   * Added assertions to made sure you can't extract a StyledText iterator
     until you've called EndConstruction.

??? - 2002/04/19 10:21:52 - hyjin

  Added support for a movie controller in 5L applications, and deleted some
  buggy pre-roll code that appeared to be causing crashes.  We're not a
  hundred percent sure all the crashing problems are fixed, but things seem
  to be working very well.  Please test this extensively!

  Set global variable _bShowMC to see the movie controller (case insensitive).

  Changes by Yijin, reviewed by Eric Kidd.

EARLIER REVISIONS
-----------------

  Lots of work to create a Common/ directory from the platform-specific
  directories, followed by work to create a portable Typography and
  GraphicsTools library.

  For even earlier work, look at the ReleaseNotes.txt files in
  Mac/ and Win32/, which contain the history of the old, platform-specific
  engines before the merge.