Update changelog for release #521

	name: ci
	on: [push]

	jobs:
	test:
	name: Test
	runs-on: ubuntu-20.04
	container:
	# Source: https://github.com/day8/dockerfiles-for-dev-ci-images
	image: ghcr.io/day8/chrome-56:2
	credentials:
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	steps:
	- uses: actions/checkout@v1
	- name: Maven cache
	uses: actions/cache@v1
	id: maven-cache
	with:
	path: /root/.m2/repository
	key: ${{ runner.os }}-maven-${{ hashFiles('project.clj', '.github/workflows/**') }}
	restore-keys: \|
	${{ runner.os }}-maven-
	- name: npm cache
	uses: actions/cache@v1
	with:
	path: ~/.npm
	key: ${{ runner.os }}-npm-${{ hashFiles('project.clj') }}-${{ hashFiles('**/deps.cljs') }}
	restore-keys: \|
	${{ runner.os }}-npm-
	- name: shadow-cljs compiler cache
	uses: actions/cache@v1
	with:
	path: .shadow-cljs
	key: ${{ runner.os }}-shadow-cljs-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-shadow-cljs-
	- if: steps.maven-cache.outputs.cache-hit != 'true'
	run: \|
	lein ci
	lein build-report-ci
	- if: steps.maven-cache.outputs.cache-hit == 'true'
	run: \|
	lein -o ci
	lein -o build-report-ci
	- uses: actions/upload-artifact@v2
	with:
	name: build-report
	path: target/build-report.html
	- name: Slack notification
	uses: homoluctus/[email protected]
	if: failure() \|\| cancelled()
	with:
	type: ${{ job.status }}
	job_name: re-com Tests
	channel: '#oss-robots'
	url: ${{ secrets.SLACK_WEBHOOK }}
	commit: true
	token: ${{ secrets.GITHUB_TOKEN }}

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