Allow to pass plugin name to custom-quick-setting-standalone
This allows to test ones own plugin but avoids plugins that can't work if they need more complex shell bits.
@samcday suggested to spawn a compositor implicitly for those plugins which will be a nice addition so we keep the full list of plugins and add command line parsing so we're able to tweak this.
Once merged we want to update https://phosh.mobi/posts/custom-plugins-dev/
Edited by Guido Günther