Add user-specific and developer-specific documentation (in GitHub README files, website) #180

	# Built from:
	# https://docs.github.com/en/actions/guides/building-and-testing-python
	# https://github.com/snok/install-poetry#workflows-and-tips
	---
	name: Build and test mixs

	on: [pull_request]

	jobs:
	test:

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

	steps:

	- name: Check out repository
	uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install Poetry
	uses: snok/[email protected]

	- name: Install dependencies
	run: poetry install --no-interaction --no-root

	- name: Install project
	run: poetry install --no-interaction

	- name: Run test suite
	run: make test

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