Updated to use latest lambda build as of 1/4/13.

Item 1, 2, 5 - PrimitiveStreams.range API refactored to Streams.intRange.
Item 6 - Tabulators refactored to Accumulators
Item 8 - intStream() moved to Streams from PrimitiveStreams
Item 10 - Refactored group album tracks by rating to be a one-liner avoiding construction of an intermediate List of tracks.