Bug: Sprite movement animation speeds are too high

[pythonarcade]

Bug: Sprite movement animation speeds are too high

[Cleptomania]

The platformer tutorial for Arcade has an example of a way to fix this.

https://api.arcade.academy/en/latest/examples/platform_tutorial/step_14.html

It doesn't apply 1:1 here, but basically we just need to keep track of a value for if you we should update the animation or not, and if we should then do it and reset the value, and if not then just increment that value.

[Cleptomania]

This was fixed in #17