Introduce the "play next" and "add to queue" features when using Deezer with Googlecast/Chromecast

Please introduce the "play next" and "add to queue" features when using Deezer with Googlecast/Chromecast. I recently installed a hi-fi system at home and I find it unbearable not to be able to use these two features, which normally work perfectly when I use Deezer on my smartphone. Why haven't the developers implemented them yet?