v1.0.4
Changes:
Needs can be used directly as decorators.CombinationNeedis used directly in place of subclasses and is bound to theNeedclass. This should allow easier subclassing.CombinationNeed.errorandNegativeNeed.errorare properties rather than being defined at instantiation. This should allow them to be overridden more easily whenNeed.combinatororNeed.negatorare overridden.