Add --workers option for multi-process operations #698

	---

	name: CI

	on: # yamllint disable-line rule:truthy
	push:
	pull_request:
	branches:
	- master

	permissions:
	contents: read

	jobs:
	lint:
	name: Linters
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	- run:
	pip install flake8 flake8-import-order sphinx sphinx_rtd_theme
	rstcheck[sphinx] doc8
	- run: pip install .
	- run: flake8 .
	- run: doc8 $(git ls-files '*.rst')
	- run: rstcheck --ignore-directives automodule $(git ls-files '*.rst')
	- run: yamllint --strict $(git ls-files '.yaml' '.yml')
	- run: make -C docs html
	- name: Check for broken links in documentation
	run: make -C docs linkcheck

	test:
	name: Tests
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version:
	- '3.8'
	- '3.9'
	- '3.10'
	- '3.11'
	- '3.12'
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Append GitHub Actions system path
	run: echo "$HOME/.local/bin" >> $GITHUB_PATH
	- run: pip install coverage
	- run: pip install .
	# https://github.com/AndreMiras/coveralls-python-action/issues/18
	- run: echo -e "[run]\nrelative_files = True" > .coveragerc
	- run: coverage run -m unittest discover
	- name: Coveralls
	uses: AndreMiras/coveralls-python-action@develop

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