Pare down docopt. Return a minimal dictionary and a set containing runtime arg values.

def get_docargs(self, args=None, prt=None, **kws):
        """Pare down docopt. Return a minimal dictionary and a set containing runtime arg values."""
        args_user = sys.argv[1:] if args is None else args
        arg_kws = self._get_docargs(args_user, prt)
        if 'intvals' in kws:
            self._set_intvals(arg_kws, kws['intvals'])
        return arg_kws