Add a link to scheme #85

	name: Test and Lint

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest

	strategy:
	matrix:
	python: [3.7, 3.8, 3.9, 3.12]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Test with pytest
	run: \|
	pytest -v --doctest-modules --ignore alt/scheme/ribbit
	- name: Lint with flake8
	run: \|
	pip install flake8
	# stop the build if there are Python syntax errors or undefined names
	flake8 nand/ *.py --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 nand/ *.py --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

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