v1.0.0-beta.12

Added

• Added drag:stopped event that will be fired after drag finished
• Support specifying an array of class name to Draggable classes option

Changed

• Fixes incorrect oldIndex value when working with nested sortable
• Fixes wrong same container checking bug when working with nested sortable
• Fixes bug drag:start event was triggered during the delay time
• Fixes missing overContainer property in DragOutEvent