Merge branch 'main' of git.adrian.geek.nz:/srv/git/rhapsode into main

Ensure link labels are unique in about:version

Distinguish SoundEffects+ & mixkit licenses on about page.

Incorporate earcon for <mark> elements.

Release Rhapsode 5!

Revert PocketSphinx integration.

Document licensing of sorting sounds.

Release Rhapsode 4!

Release Rhapsode v3 with hyperlinks

Specify the fallback license for the sound effects.

I was prompted to do some digging to find this.
elementary though relicenses it under the Unlicense.

Release Rhapsode2!

Refactor Rhapsode to use new HURL APIs and more leniantly handle MIMEtypes.