[Annoucement] Moving to gitlab

[ColinDuquesnoy]

We are going to move to gitlab. Not because Microsoft bought Github but because of their superior CI infrastructure and other interesting features such as the service desk. See #248

The new repository can be found here: https://gitlab.com/ColinDuquesnoy/MellowPlayer

All the issues has already been moved to gitlab (except 3 new issues created during this week). Starting from now, if you need to report an issue, report it on gitlab: https://gitlab.com/ColinDuquesnoy/MellowPlayer/issues

The github repository will be archived soon.

[ColinDuquesnoy]

@demmm @martinkg FYI