4.7.1:
Bugfixes
- `CIMultiDictProxy.copy` return object type `multidict._multidict.CIMultiDict`
- Make `CIMultiDict` subclassable again
- Fix regression, multidict can be constructed from arbitrary iterable of pairs again.
- `CIMultiDict.add` may be called with keyword arguments
Improved Documentation
- Mention ``MULTIDICT_NO_EXTENSIONS`` environment variable in docs.
- Document the fact that ``istr`` preserves the casing of argument untouched but uses internal lower-cased copy for keys comparison.
4.7.0:
Features
- Replace Cython optimization with pure C
- Implement ``__length_hint__()`` for iterators
- Support the MultiDict[str] generic specialization in the runtime.
- Embed pair_list_t structure into MultiDict Python object
- Embed multidict pairs for small dictionaries to amortize the memory usage.
- Support weak references to C Extension classes.
- Add docstrings to provided classes.
- Merge ``multidict._istr`` back with ``multidict._multidict``.
Bugfixes
- Explicitly call ``tp_free`` slot on deallocation.
- Return class from __class_getitem__ to simplify subclassing
occurred more than once in the container.
HTTP Headers and URL query string require specific data structure: multidict.
It behaves mostly like a regular dict but it may have several values for the
same key and preserves insertion ordering.
