Update grammar to permit d,v,w ion types #22

	name: Python tests

	on: push

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest, macos-latest]
	python-version: ["3.8", "3.9", "3.10", "3.11"]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest setuptools jsonschema pytest-cov
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 implementations/python --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 implementations/python --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Install python package
	run: \|
	pip install --editable implementations/python
	- name: Test with pytest
	run: \|
	pytest -r a implementations/python/tests/

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