Update changelog for v0.9.0 #10

	name: Create a release from a tag

	on:
	push:
	tags:
	- 'v*'

	jobs:
	deploy:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Create release through REST API
	run: \|
	# generate link changelog to parse later into the release description
	CHANGELOG_URL="https://raw.githubusercontent.com/${GITHUB_REPOSITORY}/master/CHANGELOG.md"

	# extract the tagname string from the tagpath that triggered the workflow
	TAG_NAME=$(echo $GITHUB_REF \| sed 's/refs\/tags\///')

	# specify fields for the release
	RELEASE_NAME="${TAG_NAME} release of ${GITHUB_REPOSITORY}"
	RELEASE_DESC="This release contains the changes, additions, and removals described in the ${TAG_NAME} section of the changelog at ${CHANGELOG_URL}"

	# generate data for the cURL command beforehand, to ease the parsing of strings/variables;
	# see https://stackoverflow.com/a/17032673/9161344
	generate_release_data() {
	cat <<EOF
	{
	"tag_name":"$TAG_NAME",
	"name":"${RELEASE_NAME}",
	"body":"${RELEASE_DESC}",
	"draft": false,
	"prerelease": false
	}
	EOF
	}

	# curl the Github API with the release command.
	# see https://docs.github.com/en/rest/reference/repos#releases
	curl \
	-X POST \
	--header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
	-H "Accept: application/vnd.github.v3+json" \
	https://github.com/repos/${GITHUB_REPOSITORY}/releases \
	-d "$(generate_release_data)"

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