Require HGrid >= 0.1.2
Correctly get the parent of the item being dragged over
Add folder to onMoved callback
Improve the way items are moved

Leverages the dataview api, and fixes indentation automagically
Update README
Fix dragging into an empty folder
Add test for recursive item removal
Fix error being raises while dragging
Add canDrag option
Rename onMoved -> onDrop
For now, disable folder dragging by default
Add accept callback
Rename accept -> acceptDrop
Build