Switch to ruff and reformat code. #89

	name: Lint

	on:
	push:
	branches:
	- master

	pull_request:
	branches:
	- master

	jobs:
	lint:
	runs-on: ubuntu-latest
	name: Code linting

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Set up Python 3.21
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'

	- name: Update pip and install deps
	run: \|
	python -m pip install setuptools
	python -m pip install --upgrade pip
	python -m pip install check-manifest
	python -m pip install -r requirements-dev.txt

	- name: Check MANIFEST.in in a source package
	run: check-manifest -v

	- name: Static code analysis and code style check
	run: \|
	ruff check .
	ruff format --check .

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