Miscellaneous Housekeeping (#409)

- Some fixes to `changes.txt`.
- Update automated build configs.
- Clean up whitespace in `parser_strings.cpp`.
- Update `revision.txt`.

Author: c-lipka

.travis.yml

@@ -5,7 +5,15 @@ env:
 
 branches:
   except:
+  # We're not using tags to trigger deployment, so there's no need to re-build tagged commits.
+  # All our tags start with a version number, including a leading `v`.
   - /^v[0-9]/
+  # Branches starting with "housekeeping" are intended for small changes that do not affect
+  # the software per se (e.g. fixing typos in documentation or comments); no activity desired.
+  - /^housekeeping/
+  # Branches ending with "-stable" are used only to point to other branches,
+  # which should already have been test-built at this point; no activity needed.
+  - /-stable$/
 
 language: cpp
 

appveyor.yml

@@ -6,9 +6,12 @@ branches:
   # Special branch "coverity_scan" is used only to trigger Coverity Scan;
   # no AppVeyor activity needed.
   - coverity_scan
+  # Branches starting with "housekeeping" are intended for small changes that do not affect
+  # the software per se (e.g. fixing typos in documentation or comments); no activity desired.
+  - /^housekeeping/
   # Branches ending with "-stable" are used only to point to other branches,
   # which should already have been test-built at this point; no activity needed.
-  - /.*-stable/
+  - /-stable$/
 
 # We're not using tags to trigger deployment, so there's no need to re-build tagged commits.
 skip_tags: true

changes.txt

@@ -90,7 +90,7 @@ New Features
     details.
   - Anti-aliasing now supports a new mode 3, which can actually serve as a
     generic oversampling mechanism not only suited to perform edge
-    anti-aliasing, but also to successtully suppress moire patterns as well as
+    anti-aliasing, but also to successfully suppress moire patterns as well as
     reduce image noise from stochastic mechanisms (e.g. jittered area lights,
     subsurface light transport or micronormals). The mathematical background
     and parameterization is similar to that of adaptive focal blur.
@@ -116,6 +116,11 @@ Performance Improvements
     `#if(false) ... #end`), especially for blocks containing few directives
     (stuff that begins with `#`).
 
+Miscellaneous Improvements
+--------------------------
+
+  - String literals are no longer limited to 256 characters.
+
 Fixed or Mitigated Bugs
 -----------------------