Feature Request: Scroll through layer timeline

[pto199]

I'm often printing a layer and am interested to see which part of the layer the printhead is moving to next. There's no way to do this in prettygcode now however. I can only scroll up to and look at future completed layers. I have to go back to my slicer to scroll through the timeline of an individual layer and it would be nice to do this from within prettygcode instead.