Upgrade GitHub Actions #78

	name: CI

	on:
	pull_request:
	branches:
	- master

	jobs:
	tests:
	name: Unit Tests
	runs-on: ubuntu-latest
	env:
	OCAML_JUPYTER_LOG: debug
	strategy:
	fail-fast: false
	matrix:
	ocaml-compiler:
	- 4.10.0
	- 4.11.0
	- 4.12.0
	- 4.13.0
	- 4.14.0

	steps:
	- uses: actions/checkout@v3

	- name: Setup OCaml
	uses: ocaml/setup-ocaml@master
	with:
	ocaml-compiler: ${{ matrix.ocaml-compiler }}
	cache-prefix: opam-${{ matrix.ocaml-compiler }}-
	opam-repositories: \|
	default: https://github.com/ocaml/opam-repository.git
	beta: https://github.com/ocaml/ocaml-beta-repository.git

	- name: Install dependencies
	run: \|
	sudo apt-get install -y bash zsh python2 python3 ruby
	opam install . -y --deps-only --with-test
	opam install 'merlin>3.0.0' -y

	- name: Lint for opam files
	run: opam lint *.opam
	- name: Lint for source files
	run: make check-format
	- name: Build
	run: opam exec -- dune build
	- name: Unit tests
	run: make unit-test

	##
	## Integration tests
	##

	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.9'
	architecture: 'x64'

	- name: Install Jupyter
	run: pip install jupyter

	- name: Install ocaml-jupyter kernel
	run: opam pin add jupyter . -y

	- name: Install kernelspec
	run: \|
	opam exec -- ocaml-jupyter-opam-genspec
	jupyter kernelspec install --user --name ocaml "$(opam config var share)/jupyter"
	echo '#use "topfind";;' >> ~/.ocamlinit

	- name: Integration tests
	run: make integration-test KERNEL_NAME=ocaml

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