2.2.0

• Slightly incompatible API changes. Read this.
• New approach to binding keys, support for custom bindings.
• Support for overwrite (insert).
• Custom-width and stylable tabs.
• Moved more code into add-on scripts.
• Support for sane vertical cursor movement in wrapped lines.
• More reliable handling of editing marked text.
• Add minimal emacs and vim bindings.
• Rename coordsFromIndex to posFromIndex, add indexFromPos method.

2.18.0

Fixes TextMarker.clear, which is broken in 2.17.

2.17.0

• Add support for line wrapping and code folding.
• Add Github-style Markdown mode.
• Add Monokai and Rubyblue themes.
• Add setBookmark method.
• Move some of the demo code into reusable components under lib/util.
• Make screen-coord-finding code faster and more reliable.
• Fix drag-and-drop in Firefox.
• Improve support for IME.
• Speed up content rendering.
• Fix browser's built-in search in Webkit.
• Make double- and triple-click work in IE.
• Various fixes to modes.

2.16.0

• Add Perl, Rust, TiddlyWiki, and Groovy modes.
• Dragging text inside the editor now moves, rather than copies.
• Add a coordsFromIndex method.
• API change: setValue now no longer clears history. Use clearHistory for that.
• API change: markText now returns an object with clear and find methods. Marked text is now more robust when edited.
• Fix editing code with tabs in Internet Explorer.

2.15.0

Fix bug that snuck into 2.14: Clicking the character that currently has the cursor didn't re-focus the editor.

2.14.0

• Add Clojure, Pascal, NTriples, Jinja2, and Markdown modes.
• Add Cobalt and Eclipse themes.
• Add a fixedGutter option.
• Fix bug with setValue breaking cursor movement.
• Make gutter updates much more efficient.
• Allow dragging of text out of the editor (on modern browsers).

2.13.0

• Add Ruby, R, CoffeeScript, and Velocity modes.
• Add getGutterElement to API.
• Several fixes to scrolling and positioning.
• Add smartHome option.
• Add an experimental pure XML mode.

2.12.0

• Add a SPARQL mode.
• Fix bug with cursor jumping around in an unfocused editor in IE.
• Allow key and mouse events to bubble out of the editor. Ignore widget clicks.
• Solve cursor flakiness after undo/redo.
• Fix block-reindent ignoring the last few lines.
• Fix parsing of multi-line attrs in XML mode.
• Use innerHTML for HTML-escaping.
• Some fixes to indentation in C-like mode.
• Shrink horiz scrollbars when long lines removed.
• Fix width feedback loop bug that caused the width of an inner DIV to shrink.

2.11.0

• Add a Scheme mode.
• Add a replace method to search cursors, for cursor-preserving replacements.
• Make the C-like mode mode more customizable.
• Update XML mode to spot mismatched tags.
• Add getStateAfter API and compareState mode API methods for finer-grained mode magic.
• Add a getScrollerElement API method to manipulate the scrolling DIV.
• Fix drag-and-drop for Firefox.
• Add a C# configuration for the C-like mode.
• Add full-screen editing and mode-changing demos.

2.1.0

Add a theme system (demo). Note that this is not backwards-compatible—you'll have to update your styles and modes!