shortcut to cycle/zap through channels

[alexanderdd]

Hey, can we assign -> for changing to the next channel in the current category, and <- for the previous one?

Then we can zap through channels like in good old days of TV :smile: :tv:

Also, can we have two buttons for that in fullscreen mode, so we can zap with the mouse only?

[random-pixels]

I'm really glad I read this. I had no idea this feature existed! Too bad the documentation is so sparse :(