Frozendict

What's Changed
* Fix segfault on equals between a `frozendict` and any other dict-like object different but with the same length, in Python 3.6

New Contributors
* Bengt made their first contribution in https://github.com/Marco-Sulla/python-frozendict/pull/46

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.2.0...v2.2.1

C Extension:
* Added binaries for all supported Py versions (3.7+), OSes (Linux, Windows, MacOS) and architectures (x86_64)
* Speed is now fast as dict, if not faster!
* reversed() now works also for Py 3.6 and 3.7
* Completely refactored internal code, fixing a load of problems
* Fixed bug with empty instances of subclasses
* Removed binaries for Python 3.6, see next releases

Py version:
* now `frozendict` no more inherits from `MutableMapping`. We recommend anyway the C Extension.
* reversed supported

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.1.3...v2.2.0

* Fixed segfaults on Debian: https://github.com/Marco-Sulla/python-frozendict/issues/41
* Removed precompiled binaries due to bug https://github.com/Marco-Sulla/python-frozendict/issues/41
* Cleaned up the package removing a lot of unneeded CPython source files

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.1.2...v2.1.3

Added binaries for many platforms. Yet no binary for Windows.

* fixed a bug with `pickle` in MacOS
* `repr()` now is identical in pure py version and in C extension

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.1.0...v2.1.1

New features:
* Added posibility to compile on Windows (default is pure py version)
* Sum between frozendict and any other dict is now possible for all supported versions of Python, in C Extension and in pure py version, with the operand `|`
* Added type hinting support for C extension (Python 3.9+)
* Re-added (deprecated) FrozenOrderedDict

Bug fixes:
* Fixed equality bug on MacOs
* Fixed repr for subclasses

**Full Changelog**: https://github.com/Marco-Sulla/python-frozendict/compare/v2.0.7...v2.1.0