Added release note for GitHub Actions. #13

	name: release
	on:
	push:
	branch: default

	jobs:
	release:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Package
	shell: bash
	run: make release
	- name: Tag
	run: \|
	git tag latest
	git push -f origin latest
	- name: Create release
	uses: ncipollo/release-action@v1
	with:
	name: latest
	tag: latest
	allowUpdates: true
	body: \|
	Latest automated build (ignore github-actions' release date)

	Note: this build may only be compatible with the latest release of Textadept
	(which may be an unstable release or a nightly build). If you are looking for a
	version of this module that is compatible with a specific version of Textadept,
	please download the "modules.zip" archive released alongside your version of Textadept.
	artifacts: format.zip
	token: ${{ secrets.GITHUB_TOKEN }}
	cleanup:
	runs-on: ubuntu-latest
	needs: release
	steps:
	- name: Remove older build artifacts
	uses: c-hive/gha-remove-artifacts@v1
	with:
	age: '1 minute'

Provide feedback