Fix docs (CLI rewrite), fix rtd build, state AcousticBrainz shutdown in README #410

	name: Run Python Tests

	on:
	push:
	pull_request:
	types: [opened, review_requested, synchronize, reopened, edited, ready_for_review]

	jobs:
	unittest:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.7', '3.8', '3.9', '3.10']
	steps:
	- uses: actions/checkout@v2
	- name: Install Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Run unittests - TestMix (no Config necessary)
	run: \|
	python -m unittest tests.test_mix.TestMix
	- name: Run unittests - TestConfig (first run, Config creates file)
	run: \|
	python -m unittest tests.test_config.TestConfig
	- name: Run unittests - TestConfig (second run, Config asks discogs_token)
	run: \|
	python -m unittest tests.test_config.TestConfig
	- name: Run unittests - TestCollection (uses Config w/ dummy token)
	run: \|
	python -m unittest tests.test_collection.TestCollection
	# - name: Run unittests - TestBrainz
	# run: \|
	# python -m unittest tests.test_brainz.TestBrainz

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