finished human data fn, & fiddling with number game code
number game - switching to using generic methods more, also testing current Number Game implementation
reformatting examples; NumberGame tested and works (except for sampling hyposgit status)
added probHDataGivenRule & visualizeRuleProbs functions to NumberGame.Inference module; added Frank's binding experiment to Examples folder (this may be removed later)
fixing human data inference functions; added some primitives so number game works now
Cleaned things up a whole bunch; added GrammarProbHypothesis class, including a first attempt at its compute_likelihood function.
Added grammar class to number game; started converting other examples to new format, incl. docstrings > comments.
Number game - debugging methods for calc. probability of human data.