* 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
