Fixes
- We now include the size of the placeholder in a droppable area's dimensions, when appropriate. During a drag, when hovering over a Droppable that's not the one you lifted from, the size of that Droppable will appear to expand to create a gap for the dragging item. This conditional extra area wasn't being included in the Droppable's hit-box previously, but now it is. #122
- Fixed a bug whereby Droppable dimensions weren't being clipped by their scroll parent when calculating which droppable to move into when moving between lists using the keyboard. #136
- Fixed how we bind event listeners to the window object, which allows the drag-and-drop to be popped out into another window. Thanks @kgorgi!! #139