Add yaml release data file.
Use release data to generate release changelog.
Add relase compatibility.
Add version compatibility to the changelog.
Move changelog to a separate page, remove donation section.
Add relase page.

Add release page with links pointing to the extension site zipfiles. Add zip
urls to the releases.yml file. Correct for new links here and there.
Update internal links to point to the release page, move it to the download section.