improve arg eval

[zerwes]

          Is there a reason why arguments are evaulated in such a (IMO) cumbersome way? This could be just a keyword argument to the function instead of manually fiddling with `kwargs`... I would probably have implemented it like that when starting from scratch:

NoneBehavior = Enum("NoneBehavior", ["DEFAULT", "OVERRIDE"])

def __init__(self, *args, none_behavior: NoneBehavior = None, **kwargs):
    if none_behavior not in NoneBehavior:
        raise HiYaPyCoInvocationException(f"Undefined non_behavior, must be one of {', '.join(NoneBehavior._member_names_}")
    self.none_behavior = none_behavior

Originally posted by @grst in #78 (comment)