Assorted cleanup and a few type hints #56

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	name: Run Tox tests

	jobs:
	tox_test:
	name: Tox test
	steps:
	- uses: actions/checkout@v4
	- name: Run Tox tests
	id: test
	uses: fedora-python/tox-github-action@main
	with:
	tox_env: ${{ matrix.tox_env }}
	strategy:
	fail-fast: false
	matrix:
	tox_env: [py39, py310, py311, py312, py313, pypy3, pep8]

	# Use GitHub's Linux Docker host
	runs-on: ubuntu-latest

	lints:
	name: Lints
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Install ruff
	run: \|
	python3 -m pip install --break-system-packages ruff
	- name: Run ruff format
	run: \|
	ruff --version
	if ! ruff format --check --quiet varlink
	then
	echo "Please run 'ruff format' on the above files or apply the diffs below manually"
	ruff format --check --quiet --diff varlink
	fi
	- name: Run ruff check
	run: \|
	ruff --version
	ruff check varlink
	runs-on: ubuntu-latest

Provide feedback