Updating comming on LatestValueFilter
Renamving LastValueFilter -> ApplyAndFilterDeletesFilter and some logic cleanup therein
Adding test for DeletesFilter and fixing small logic issue
Slight cleanup to LocalTable comments
Adding ApplyAndFilterDeletesFilter in LocalTableState
Updating MaxTimestampFilter to use hint.

We know the next timestamp to which we wanted to hint, so we might as well
use it and hint that to the scanner.
Updating interfaces to support out-of-order puts.

IndexUpdates now returned from getIndexUpserts and encapsulates a column tracker to track
both the column references and the 'next newest timestamp' for delete management.

Also adding cleanup of out-of-order puts via deletes using the updated interfaces