Button: Remove obsolete mouse click coordinates checking. Fixed #7665 - Button: Radio button & checkboxes ignore mouseclicks for minor mouse movements.
Draggable Tests: Ensure all combinations of helper / draggable positions / scrollParents / parent positions are tested accurately.
Droppable: update ddmanager when scope changes through setOption. Fixed #9287 - droppable: Scope option cannot be changed after initialization.
Draggable Tests: don't test auto scroll while testing helpers.
Update grunt-contrib-jshint to 0.7.1 and squash jshint tasks.
Sortable: Adjust itemWithLeastDistance algorithm in _contactContainers to properly handle dragging items to the beginning and ends of lists. Fixes #9314 - Sortable: Items cannot be dragged directly into bottom position. Fixes #9381 - Sortable: Connected list placeholders have an inaccurate initial position