Contains.in and Contains.notin are now Contains.within and Contains.without as 'in' is a reserved term in most programming languages. Fixed #174
Renamed plugins to have a "tinkerpop" namespace #209

Corrected documentation where it mattered.
No longer List<MapReduce> but Set<MapReduce> with hashCode() and equals() implemented for existing MapReduce jobs as well provided a GraphComputerHelper.areEqual() for default equality. This is necessary for two reasons -- order of execution doesnt matter (Set) and two mapReduces that do the exact same thing provide no gain as the Map is always over the vertex-set. Added more JavaDoc to GraphComputer for @dalaro .. Fixed #163