[GREENFOOT-360] Scaling image doesn't update actor size/bounds
When an actor's image is scaled, the actor size (for collision checking purposes) is not recalculated.
(This is perhaps an API design flaw rather than a behavioural bug \- i.e. maybe it shouldn't be possible to scale an image "in place"; rather, scaling should return a new image).
- Issue type: Bug
- Priority: Low