Add a start-minimized option

[ColinDuquesnoy]

Description:

Feature suggested by @Dodjob

Add minimized/systemized start command/option for Linux user :)
I have currently to add it at startup and close the window. a Mellowplayer --minimized option would be awesome in order to start the stream from remote controller (Kde-connect) :)

[ColinDuquesnoy]

This issue has been moved to our new gitlab issue tracker.

The github repository will be archived soon and this issue will become read-only. We suggest you continue the discussion and follow the progress on this issue at gitlab.