Prepare v8.4.0 release #522

	# This workflow will install project dependencies and run linter
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: lint

	on:
	push:
	branches: ["*"]
	pull_request:
	branches: ["*"]

	jobs:
	lint:
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v3
	with:
	submodules: recursive
	- name: Install Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}

	- name: Setup Graphviz
	uses: ts-graphviz/setup-graphviz@v1

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt

	- name: Run mypy
	run: mypy automata/*/.py tests/*.py

	- name: Run flake8
	run: flake8 automata/*/.py tests/*.py

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