Separate speed adjustment for closing / opening animation

[SnoutBug]

The Idea

Animations appear to have different speed when closing or opening (especially the TV effect where the closing animation looks faster than the opening one) I would love to adjust the timings for closing and opening separately.

[Schneegans]

Hi there! Thanks for the suggestion, this could indeed be an improvement. I think I won't have the time to implement this in the near future, so if anybody wants to add this (it shouldn't be too hard), just drop a note here!

[Schneegans]

This will be possible with the idea sketched in #89.