Use native HTML5 Drag'n'Drop for text.
Set `this` context of event handlers for old IE.
Fix IE native drag'n'drop issues
Improve autoscroll behavior for text dragging
Fix Opera drag image issue.
workaround for broken Object.create(null) on old opera
fixes https://github.com/ajaxorg/ace-builds/issues/13
allow setting MaxTokenCount in tokenizer
always call callback from setMode
fix #1606 broken markdown snippets
replace ace global with getter in the demo
see 060e86d6
fix popup position flipping
always call setMode callback after the event
Make editor container to be drop zone
Add onMouseDrag method to the DragdropHandler
Improve native selection prevention on dnd
Fix dbl/triple click issues of native dnd
Merge pull request #1607 from ajaxorg/small_bugs

Small bugs
fix string parsing in php worker
better compositionUpdate on chrome
Fix webkit fake mousemove event (breaking dnd) issue