Added features to the timeline:
Cycle frame selection; Meaning If you have frames 1-10 selected, pressing this would cycle the selection backwards/forwards relative to itself… So frame 10 would become frame 1, frame 1 becomes 2 etc. Useful for offsetting repeating elements in the time tomain.
Reverse selected frames; Reverse the order of the selected frames
Double: Repeats/doubles every frame relative to itself in the selection. Halves the animation speed essentially, without changing the fps/frame duration.
Half: Removes every other frame, to double the speed of the animation, without changing fps/frame duration.