Cachetools

===================

- Officially support Python 3.7.

- Drop Python 3.3 support (breaking change).

- Remove ``missing`` cache constructor parameter (breaking change).

- Remove ``self`` from ``cachedmethod`` key arguments (breaking
change).

- Add support for ``maxsize=None`` in ``cachetools.func`` decorators.

===================

- Deprecate ``missing`` cache constructor parameter.

- Handle overridden ``getsizeof()`` method in subclasses.

- Fix Python 2.7 ``RRCache`` pickling issues.

- Various documentation improvements.

===================

- Officially support Python 3.6.

- Move documentation to RTD.

- Documentation: Update import paths for key functions (courtesy of
slavkoja).

===================

- Drop Python 3.2 support (breaking change).

- Drop support for deprecated features (breaking change).

- Move key functions to separate package (breaking change).

- Accept non-integer ``maxsize`` in ``Cache.__repr__()``.

===================

- Reimplement ``LRUCache`` and ``TTLCache`` using
``collections.OrderedDict``. Note that this will break pickle
compatibility with previous versions.

- Fix ``TTLCache`` not calling ``__missing__()`` of derived classes.

- Handle ``ValueError`` in ``Cache.__missing__()`` for consistency
with caching decorators.

- Improve how ``TTLCache`` handles expired items.

- Use ``Counter.most_common()`` for ``LFUCache.popitem()``.

===================

- Refactor ``Cache`` base class. Note that this will break pickle
compatibility with previous versions.

- Clean up ``LRUCache`` and ``TTLCache`` implementations.