.initialize and .widget according to new API
New Widget API
Custom events for Widget API
Updated index demo for new widget API; removed invalid stuff
Remove wrapper on event off
Reuse $.Callbacks for widget change
widget.value(file) + change trigger fixes
Set all user values as files
Widget API returns file objects instead of uuids
Merge pull request #55 from uploadcare/widget-api

Widget API
0.6.6
Global whenReady fix
0.6.6.1
merge master -> optional-preview-step