Draggable + Sortable: Fixed blockFrames. Added unit tests specifically for draggable since it should be moving up to "core" file shortly
Droppable: Added greedy option back in
Droppable: "accept" option now takes function
Draggable: Fixed overwriting _setOption to handle both backCompats rather than clobbering itself
Droppable: Changed single quotes to double quotes
Draggable: Undid last commit due, since $.widget properly handles extending multiple times
Droppable: Added activeClass backCompat
Droppable: Added hoverClass backCompat along with linting and corrected comments
Droppable + Draggable: Added scope backCompat
Droppable: Added in "fit" tolerance
Sortable: add appendTo default
Merge branch 'interactions' of https://github.com/jquery/jquery-ui into sortable
Sortable: implement 'exclude' option
Sortable: implement 'handle' option