Test (and correct) that all "M" and "maj" qualities are synonyms for … #120

	name: Build

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Run test
	run: \|
	python setup.py test
	- name: Style check
	run: \|
	pip install flake8
	flake8 --ignore=E501 pychord test
	- name: Type check
	run: \|
	pip install mypy
	mypy pychord

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