* Adds cxxrandom unit test and fixes interface problems
* Tightens braces
* Adds detection code for Shuffle's seqID/engID
* Adds usage examples for cxxrandom
* Gives cxxrandom objects id ranges, sort of
* Updates changelog
* Updates changelog.txt
* Increases id space for cxxrandom
* Fixes bool distribution error message and improves check
* Adds comment explaining the seeded RNG tests for cxxrandom
* Fixes type problem for 32bit builds
* Reduces loop count a few magnitudes
* Fixes a mistake in test.cxxrandom_seed
Josh Cooper