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Squashed commit of the following:

commit 3dd25e35bb8c9d238e64300494b8c4e05e494bba
Author: Daniel Friesel <derf@finalrewind.org>
Date:   Mon Apr 6 10:02:57 2020 +0200

    hm

commit 04159061ed7932e2ee4ceca7af9d43a3fca034c5
Author: Daniel Friesel <derf@finalrewind.org>
Date:   Mon Apr 6 09:56:19 2020 +0200

    no sudo

commit 1d16ec10faa807672433cbab11acd50eee9c8a6f
Author: Daniel Friesel <derf@finalrewind.org>
Date:   Mon Apr 6 09:51:54 2020 +0200

    Switch from Travis CI to GitHub Actions