ekmett/tables — pull request #4 by Taneb (2012-12-30 16:20:46+00:00)
Title: Inverted keys use sets

* Inverted keys use Sets
* InvertedInt keys use IntSets
* InvertedHash keys use HashSets
* Slight rearrangement of the Withal class to accommodate this
* Docs for the Table type now mentions key types other than the original three
* Hash-based keys are now exported