Add python 3.11 to CI runs #220

	name: Unit Tests

	on:
	- push
	- pull_request

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: [3.7, 3.8, 3.9, '3.10', '3.11', 'pypy3.9']

	steps:
	- uses: actions/checkout@v3
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	- name: Install Dependencies
	run: pip install tox
	- name: Run Tox
	run: tox -e py
	- name: Run Tox Flask==2.1
	run: tox -e flask21

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