0.2.80 Beta release

[Matthieu Gallien]

Hello,

Thanks to everybody involved in making the 0.2.80 release such a great 
improvement over the previous releases.

It is now published officially (https://mgallienkde.wordpress.com/
2018/09/12/0-3-beta-release-of-elisa-music-player/).

Let's try to make the final 0.3 release the best ever release of the Elisa 
music player.

Best regards