Add draft version of multi-line grammar #18

	# This workflow will run package tests

	name: Python tests

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	permissions:
	contents: read

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python 3.10
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	- name: Install hatch
	run: \|
	python -m pip install --upgrade pip
	pip install hatch
	- name: Run tests using hatch
	run: \|
	hatch test

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