Deprecates useFastPath in SC.CollectionView (i.e. SC.CollectionFastPath) since the performance improvements have been baked in by default.
Adds documentation on the new default SC.CollectionView view and layer pooling.
Speeds up the performance of determining if an item index is a group index in SC.CollectionView by first checking if there are group indexes and the item index is within those indexes.
Removes SC.ListItemView as the default exampleView of SC.CollectionView.  For one, SC.CollectionView should not be used un-extended so there's no reason to predefine this value and for two, this means that you can't blacklist out SC.ListItemView and keep SC.CollectionView.