Sequencer - QoL

Hi !

Thanks for updates!
My experience with Sequencer in 4.13p1 is reaaally smooth now :slight_smile:
Also I’ve noticed you’ve added Shuttle functionality which allows to increase play/reverse speed by tapping it again which is beyond cool!
Default keybindings a little bit off though - “J” is used for “Shuttle backwards”, but “L” is “Toggle play” which stop playing on tapping it again. I just binded “Shuttle forward” to L and it works properly, but new users might be confused why “L” stop playing instead of speeding it up!