• New mode: Common Lisp.
• Fix right-click select-all on most browsers.
• Change the way highlighting happens:
    Saves memory and CPU cycles.
    compareStates is no longer needed.
    onHighlightComplete no longer works.
• Integrate mode (Markdown, XQuery, CSS, sTex) tests in central testsuite.
• Add a CodeMirror.version property.
• More robust handling of nested modes in formatting and closetag plug-ins.
• Un/redo now preserves marked text and bookmarks.
• Full list of patches.