began working on T3
added T3 steps, constraint class
working on T3 feature
wrote some tests for school class
working on schedule getter/setter, refactoring
refactored getter and setter
finished refactor
writing Constraint.hard_assert
made Schedule#parse_getter_setter_args a class method
wrote Constraint class method for getting a list of slots to be checked by the constraint
got part time hours constraint working. needs refactoring like a mofo though
added T1_steps, did some cucumber work