Add optional support for mermaid charts #284

	name: Test
	on:
	pull_request:
	push: { branches: master }

	jobs:
	test:
	name: Ruby ${{ matrix.ruby }}

	runs-on: ubuntu-latest

	strategy:
	matrix: { ruby: ['3.0', '3.1', '3.2', '3.3'] }

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Install OS dependencies
	run: sudo apt-get -y install libyaml-dev pandoc

	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: '${{ matrix.ruby }}'
	bundler-cache: true

	- name: Run tests
	run: bundle exec rspec && STANDALONE=1 bundle exec rspec

	json_schema:
	name: Validate JSON schema

	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	# Rush needed for easy installation of check-jsonschema
	- name: Install rush
	run: curl -Ls http://get.dannyb.co/rush/setup \| bash

	- name: Connect rush repo
	run: rush clone dannyben --shallow --default

	- name: Install check-jsonschema
	run: rush get check-jsonschema

	# libyaml needed for Ruby's YAML library
	- name: Install OS dependencies
	run: sudo apt-get -y install libyaml-dev

	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: '3.2'
	bundler-cache: true

	- name: Test schema
	run: bundle exec run schema

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