[Feature Request] Show playback speed in main window

Pardon me, if this has already been discussed, I have searched the issues and couldn't find anything.

I was wondering if the playback speed (if changed to other than normal, slower or faster) can be shown in the main window, e. g. next to the "Playlist --" or next to the time code at the bottom, or next to the play buttons or volume slider.

I know that you can check it by entering the playback menu, but maybe a quick(er) overview (in case it has been changed to other than normal) would be appreciated also by other users. It's a feature in many podcast players.

Other than that: Great program!