module documentation

Undocumented

Class DictStack A stack of dictionaries that behaves as a view on those dictionaries, giving preference to the last.
Class RangeMap A dictionary-like object that uses the keys as bounds for a range. Inclusion of the value for that range is determined by the key_match_comparator, which defaults to less-than-or-equal. A value is returned for a key if it is the first key that matches in the sorted list of keys.