Frozendict

What's Changed
* Various improvements to type hints
* Fix union of frozendict for python implementation by apmorton in https://github.com/Marco-Sulla/python-frozendict/pull/89
* Avoid storing empty singleton on class itself in python implementation by apmorton in https://github.com/Marco-Sulla/python-frozendict/pull/86
* Now pure py implementation can be built also passing the `FROZENDICT_PURE_PY` env var with value `1`

New Contributors
* apmorton made their first contribution in https://github.com/Marco-Sulla/python-frozendict/pull/86

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.8...v2.3.9

What's Changed
* Added type annotations to pyi interface file. by gauravmm in https://github.com/Marco-Sulla/python-frozendict/pull/70
* Numerous improvements to `frozendict` type hints.
* Now `cibuildwheel` is set to skip `Python` 3.11 and `Pypy` by default in `pyproject.toml`

New Contributors
* gauravmm made their first contribution in https://github.com/Marco-Sulla/python-frozendict/pull/70

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.7...v2.3.8

What's Changed
* Fixed a regression in sdist packages that made them not working in the previous release (by sunpoet in https://github.com/Marco-Sulla/python-frozendict/pull/77)

* Added arm64 builds for all supported archs (Linux, Windows, Mac)

New Contributors
* sunpoet made their first contribution in https://github.com/Marco-Sulla/python-frozendict/pull/77

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.6...v2.3.7

What's Changed
* Added monkeypatches to `json` and `orjson`, so you can serialize `frozendict` directly
* Added muslinux builds
* Now pure py wheel is builded if a version of cpython is not supported. By arkamar in https://github.com/Marco-Sulla/python-frozendict/pull/69
* Many other under-the-hood changes

New Contributors
* arkamar made their first contribution in https://github.com/Marco-Sulla/python-frozendict/pull/69

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.5...v2.3.6

* C Extension is now optional by default
* Pure py package will be no more pubished on Pypi
* Fixed incompatibility with pyinstaller
* Fixed little bug with mypy

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.4...v2.3.5

* fixed various memory leaks
* Implemented a memory leak tracer

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.3.3...v2.3.4