3.12.0

• New mode: GNU assembler.
• New options: maxHighlightLength and historyEventDelay.
• Added addToHistory option for markText.
• Various fixes to JavaScript tokenization and indentation corner cases.
• Further improvements to the vim mode.
• Full list of patches.

3.11.0

• Removed code: collapserange, formatting, and simple-hint addons. plsql and mysql modes (use sql mode).
• Moved code: the range-finding functions for folding now have their own files.
• Changed interface: the continuecomment addon now exposes an option, rather than a command.
• New modes: SCSS, Tcl, LiveScript, and mIRC.
• New addons: placeholder, HTML completion.
• New methods: hasFocus, defaultCharWidth.
• New events: beforeCursorEnter, renderLine.
• Many improvements to the show-hint completion dialog addon.
• Tweak behavior of by-word cursor motion.
• Further improvements to the vim mode.
• Full list of patches.

3.1.0

• Incompatible: key handlers may now return, rather than throw CodeMirror.Pass to signal they didn't handle the key.
• Make documents a first-class construct, support split views and subviews.
• Add a new module for showing completion hints. Deprecate simple-hint.js.
• Extend htmlmixed mode to allow custom handling of script types.
• Support an insertLeft option to setBookmark.
• Add an eachLine method to iterate over a document.
• New addon modules: selection marking, linting, and automatic bracket closing.
• Add "beforeChange" and "beforeSelectionChange" events.
• Add "hide" and "unhide" events to marked ranges.
• Fix coordsChar's interpretation of its argument to match the documentation.
• New modes: Turtle and Q.
• Further improvements to the vim mode.
• Full list of patches.

3.02.0

Single-bugfix release. Fixes a problem that prevents CodeMirror instances from being garbage-collected after they become unused.

3.01.0

• Move all add-ons into an organized directory structure under /addon. You might have to adjust your paths.
• New modes: D, Sass, APL, SQL (configurable), and Asterisk.
• Several bugfixes in right-to-left text support.
• Add rtlMoveVisually option.
• Improvements to vim keymap.
• Add built-in (lightweight) overlay mode support.
• Support showIfHidden option for line widgets.
• Add simple Python hinter.
• Bring back the fixedGutter option.
• Full list of patches.

2.38.0

Integrate some bugfixes, enhancements to the vim keymap, and new modes (D, Sass, APL) from the v3 branch.

2.37.0

• New mode: SQL (will replace plsql and mysql modes).
• Further work on the new VIM mode.
• Fix Cmd/Ctrl keys on recent Operas on OS X.
• Full list of patches.

3.0.0

New major version. Only partially backwards-compatible. See the upgrading guide for more information. Changes since release candidate 2:

• Rewritten VIM mode.
• Fix a few minor scrolling and sizing issues.
• Work around Safari segfault when dragging.
• Full list of patches.

2.36.0

• New mode: Z80 assembly.
• New theme: Twilight.
• Add command-line compression helper.
• Make scrollIntoView public.
• Add defaultTextHeight method.
• Various extensions to the vim keymap.
• Make PHP mode build on mixed HTML mode.
• Add comment-continuing add-on.
• Full list of patches.

2.35.0

• New (sub) mode: TypeScript.
• Don't overwrite (insert key) when pasting.
• Fix several bugs in markText/undo interaction.
• Better indentation of JavaScript code without semicolons.
• Add defineInitHook function.
• Full list of patches.