Moved equals from ArrayIndexIntSet to functions.ts
Merge remote-tracking branch 'origin/master'

Conflicts:
	ozone.js
	ozone.js.map
Added BitmapArrayIntSet code to functions.ts.  Bitmaps are now the default IntSet in functions.ts, mostEfficientIntSet, unionOfOrderedIterators (more efficient than unionOfIterators), and mostEfficientIntSet was added. Fixed BitmapArrrayIntSet.union and added offsets to the word iterator.
BitmapArrayIntSet.intersection now functional.
Merge remote-tracking branch 'origin/master'

Conflicts:
	ozone.js
	ozone.js.map