Add no-longer-maintained notice and recommend jupyterlab-h5web #55

	name: Build

	on:
	push:
	branches: main
	pull_request:
	branches: '*'

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: [3.7, 3.8, 3.9]
	fail-fast: false
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Install node
	uses: actions/setup-node@v2
	with:
	node-version: '16.x'

	- name: Install Python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python }}

	- name: Install dependencies
	run: python -m pip install jupyterlab~=3.0

	- name: Build the extension
	run: \|
	jlpm
	jlpm build
	pip install .
	jupyter labextension install
	jupyter lab build
	jupyter serverextension list 1>serverextensions 2>&1
	cat serverextensions \| grep "jupyterlab_hdf.*OK"
	jupyter labextension list 1>labextensions 2>&1
	cat labextensions \| grep "@jupyterlab/hdf5.*OK"
	python -m jupyterlab.browser_check

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