Add py.typed, run type checks as part of GitHub Actions #35

	# Run tests and style checks on each commit to an open pull request.

	name: on-commit

	on: [pull_request, workflow_dispatch]

	jobs:
	test:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	python-version: ['3.6', '3.8', '3.10', '3.11-dev', 'pypy3.9']

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	cache-dependency-path: 'requirements/test.txt'
	- name: Install dependencies
	run: python -m pip install -r requirements/test.txt
	- name: Check types with mypy
	run: python -m mypy .
	- name: Test with pytest
	run: python -m pytest

	style:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.10
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'
	cache: 'pip'
	cache-dependency-path: 'requirements/style.txt'
	- name: Install dependencies
	run: python -m pip install -r requirements/style.txt
	- name: Run style checks
	run: \|
	python -m flake8 .
	python -m isort --check --diff .
	python -m black --check --diff .
	python -m mypy --strict .

Provide feedback