add requirements_docs.txt for readthedocs #190

	name: Test

	on:
	pull_request:
	# allows this workflow to be reusable (e.g. by the build workflow)
	workflow_call:

	jobs:
	test:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v2

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	pip install tox tox-gh-actions

	- name: Run tox
	run: tox # this does not call docs

	coverage:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: ["3.11"]

	steps:
	- uses: actions/checkout@v2

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	pip install tox tox-gh-actions

	- name: Run tox coverage
	run: tox -e coverage # specify the coverage environment

	- name: "Upload coverage to Codecov"
	uses: codecov/codecov-action@v3
	with:
	fail_ci_if_error: false
	docs:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: "3.9"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	pip install tox tox-gh-actions
	- name: Run tox
	run: tox -e docs

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