You can read the new patches or download the zip file.
Release notes
Bug fixes
Improve reliability of noticing a missing mouseup event during dragging.
Make sure getSelection is always called on the correct document.
Fix interpretation of line breaks and non-breaking spaces inserted by renderer in contentEditable mode.
Work around some browsers inexplicably making the fake scrollbars focusable.
Make sure coordsChar doesn’t return positions inside collapsed ranges.
javascript mode: Support block scopes, bindingless catch, bignum suffix, s regexp flag.
markdown mode: Adjust a wasteful regexp.
show-hint addon: Allow opening the control without any item selected.
New features
New theme: darcula.
dialog addon: Add a CSS class (dialog-opened) to the editor when a dialog is open.