* 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
* Use submodule imports in aqt
* Use submodule imports in pylib
* More submodule imports in pylib
These required removing some direct imports to get rid of import cycles.
The enum changes should work on PyQt 5.x, and are required in PyQt 6.x.
They are not supported by the PyQt5 typings however, so we need to run
our tests with PyQt6.
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.
