2023-01-07: introduced bump func, tagged 0.7.2
2022-12-31: added keys and values iterators, tagged 0.7.0
2022-12-31: added dump/restore facilities, tagged 0.6.1
2022-12-31: reverted to old 0.4.0 hash storage style, tagged 0.6.0
2022-12-25: added benches, tagged 0.5.1
2022-12-25: rewrote using a double-linked list, tagged 0.5.0
2022-12-24: added lru_cloned, mru_cloned, switch to edition 2021, tagged 0.4.0
2022-12-24: added get_key_value and peek_key_value, tagged 0.3.2
2022-12-24: added mru/resize/clear, tagged 0.3.1
2022-12-24: added push/pop/lru, fix order bug, tagged 0.3.0
2022-12-17: added peek method, tagged 0.2.1
2022-12-11: added capacity method, tagged 0.2.0
2020-01-05: initial release, tagged 0.1.0
