TonicArtos/StickyGridHeaders — pull request #77 by dmitry-zaitsev (2013-11-25 17:04:27+00:00)
Title: StickyGridHeadersBaseAdapterWrapper used notifyDataSetChanged (or ..Invalidated) incorrectly

`notifyDataSetChanged` and `notifyDataSetInvalidated` methods of `StickyGridHeadersBaseAdapterWrapper` were actually useless, since wrapper adapter didn't registered incoming `DataSetObserver`s.