Migrate to ruff #218

	name: ci

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.7, 3.8, 3.9]
	env:
	MPLBACKEND: agg
	steps:

	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	submodules: true

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

	- name: Install
	run: \|
	pip install .[all]

	- name: Lint
	run: \|
	ruff format --check
	ruff check

	- name: Test
	run: \|
	pip install pytest
	pytest -vsx tests

	- name: Run examples
	run: \|
	python getting_started.py
	for f in examples/*.py; do
	if [ -x $f ]; then
	$f
	fi
	done

	- name: Install from dist
	run: \|
	python setup.py sdist
	pip install dist/*.tar.gz

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