Python-multipart

* Add support for Python 3.12 [85](https://github.com/Kludex/python-multipart/pull/85).
* Drop support for Python 3.7 [95](https://github.com/Kludex/python-multipart/pull/95).
* Add `MultipartState(IntEnum)` [96](https://github.com/Kludex/python-multipart/pull/96).
* Add `QuerystringState` [97](https://github.com/Kludex/python-multipart/pull/97).
* Add `TypedDict` callbacks [98](https://github.com/Kludex/python-multipart/pull/98).
* Add config `TypedDict`s [99](https://github.com/Kludex/python-multipart/pull/99).

* Check if Message.get_params return 3-tuple instead of str on parse_options_header [79](https://github.com/Kludex/python-multipart/pull/79).
* Cleanup unused regex patterns [82](https://github.com/Kludex/python-multipart/pull/82).

* Refactor header option parser to use the standard library instead of a custom RegEx [75](https://github.com/andrew-d/python-multipart/pull/75).

* Migrate package installation to `pyproject.toml` (PEP 621) [54](https://github.com/andrew-d/python-multipart/pull/54).
* Use yaml.safe_load instead of yaml.load [46](https://github.com/andrew-d/python-multipart/pull/46).
* Add support for Python 3.11, drop EOL 3.6 [51](https://github.com/andrew-d/python-multipart/pull/51).
* Add support for Python 3.8-3.10, drop EOL 2.7-3.5 [42](https://github.com/andrew-d/python-multipart/pull/42).
* `QuerystringParser`: don't raise an AttributeError in `__repr__` [30](https://github.com/andrew-d/python-multipart/pull/30).