Add tox, github action #2

	name: Run tests

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ["3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v3
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	- name: Install tox and any other packages
	run: pip install tox
	- name: Run tox
	# Run tox using the version of Python in `PATH`
	run: tox -e py

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