initial branch for representing the anti-members/distractors
removed debuging print statements
replaced size with binomial coefficient range function
removed help messages
added negation
added negation to belief state
renamed anti target to distractor
removed multistate
merge to add negation
Merge branch 'master' of https://github.com/EventTeam/beliefs into gh-pages

Conflicts:
	.gitignore
	src/beliefs/beliefstate.py
added abs() to interval cell;  removed speaker_goals from belief state
fixed import to numeric
rewrote get_ordered_values function to work with differences
rewrote get_ordered_values function to work with differences
improved IntervalCell hash function
cleared up debugging code
Merge branch 'master' of https://github.com/EventTeam/beliefs into gh-pages

Conflicts:
	src/beliefs/beliefstate.py
	src/beliefs/cells/numeric.py
removed some debugging code
checked for empty values in get_unique_values
Merge branch 'master' of https://github.com/EventTeam/beliefs into gh-pages