MAINT: Migrate to PEP517/518 packaging #373

	name: Contribution checks
	on: [push, pull_request]

	defaults:
	run:
	shell: bash

	jobs:
	stable:
	name: Run flake8
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	with:
	submodules: recursive
	fetch-depth: 0
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: 3.9
	- name: Install flake8
	run: python -m pip install flake8
	- name: Check EddyMotion
	run: python -m flake8 src

Provide feedback