Solves issue #752

[akapkotel]

Updating sprite width/height was not changing it's hitbox. Now it is.

Working with to the code example posted by @eruvanos :

The old spaceship sprite before width change:

And after self.sprite.width changed to 198:

Also, assertions:

assert hit'
assert self.sprite.right == self.sprite.center_x + 90

are now resolved to True.