Add type hints #31

	---
	on:
	push:
	branches-ignore:
	- main
	permissions:
	contents: write

	jobs:
	black:
	permissions:
	contents: write # for Git to git push
	runs-on: ubuntu-latest
	steps:
	- name: Checkout project
	uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v3.5.0

	- name: Set up Python
	uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v4.5.0
	with:
	python-version: '3.12'

	- name: Set up cache for Python dependencies.
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/pyproject.toml') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install .[formatting]
	- name: Run black
	run: \|
	black --line-length 120 .
	- name: Commit changes
	run: \|
	git config user.name github-actions
	git config user.email [email protected]
	git add .
	git commit -m "black auto commit" \|\| true
	git push

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