* chore: add myself to CONTRIBUTORS file
* refactor: use newer type hints for Union/Optional
* refactor: fix deprecated type annotations
use collections.abc rather than typing
* refactor: use lower letter type annotations
* style: reformat with black
* refactor: remove unused imports
* refactor: add missing imports for type hints
* fixup! refactor: use newer type hints for Union/Optional
* fix: add missing imports for type annotations
* fixup! refactor: use newer type hints for Union/Optional
* fixup! style: reformat with black
* refactor: fix remaining imports re: type hints
This adds Python 3.9 and 3.10 typing syntax to files that import
attributions from __future___. Python 3.9 should be able to cope with
the 3.10 syntax, but Python 3.8 will no longer work.
On Windows/Mac, install the latest Python 3.9 version from python.org.
There are currently no orjson wheels for Python 3.10 on Windows/Mac,
which will break the build unless you have Rust installed separately.
On Linux, modern distros should have Python 3.9 available already. If
you're on an older distro, you'll need to build Python from source first.
