Document Python 3.7 as the minimum supported version #738

	name: CI tests at GitHub

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	check:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 flake8-import-order \
	attrs configobj pycotap pysol-cards setuptools six
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	flake8 . --show-source
	- name: Run unit tests
	run: \|
	python -m unittest -v
	- name: Individually import each Python module
	run: \|
	python scripts/gen_individual_importing_tests.py
	prove tests/individually-importing/*.py

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