add markdown extension for section permalinks #413

	name: build

	on: push

	jobs:
	build:
	name: Build, lint, and test on Node.js ${{ matrix.node }}
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node: ["18.x", "20.x"]

	steps:
	- uses: actions/checkout@v4

	- name: Setup Node v${{ matrix.node }}
	uses: actions/setup-node@v4
	with:
	node-version: ${{ matrix.node }}
	cache: npm

	- name: Install pango for NPM package "canvas"
	run: sudo apt-get update && sudo apt-get install -y libpango1.0-dev

	- name: Install NPM dependencies
	run: npm install --package-lock

	- name: Lint project
	run: npm run lint

	- name: Format project
	run: npm run format

	- name: Build packages
	run: npm run build

	- name: Test project
	run: npm test

	- name: Check for clean git tree
	shell: bash
	run: \|
	if [[ $(git status -s) ]]
	then
	echo "The following files have changed:"
	git status -s
	exit 1
	fi

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