Prepare releasing version 0.4.2

Prepare releasing version 0.4.1

Prepare releasing SongRec 0.4.0

Update the metadata license statement tag for compliance with newer F…

…lathub guidelines

Prepare for releasing version 0.3.2

Prepare the release of version 0.3.1

Further fix the Debian package release notes

Push a few uncommitted files

Prepare upgrading to version 0.2.0

Address minor typos in 0.1.9 release notes