Adds multiple excluded times by tuple of (start, end, days) or by
        TimeRange instance.

        ``start`` and ``end`` are in military integer times (e.g. - 1200 1430).
        ``days`` is a collection of integers or strings of fully-spelt, lowercased days
                 of the week.

def exclude_times(self, *tuples):
        """Adds multiple excluded times by tuple of (start, end, days) or by
        TimeRange instance.

        ``start`` and ``end`` are in military integer times (e.g. - 1200 1430).
        ``days`` is a collection of integers or strings of fully-spelt, lowercased days
                 of the week.
        """
        for item in tuples:
            if isinstance(item, TimeRange):
                self._excluded_times.append(item)
            else:
                self.exclude_time(*item)
        return self