FWF: Animated Quick

Alright! I stopped showing these for a while but I promise I haven't stopped working on them. Only 3 left and hopefully we'll get a chance to look at them all in action in a new demo soon enough.

I wanted these to be a little smaller than the average Creep. Kind of a zigzag/lightning motion since they're the fastest of the bunch.

Also revised the Spitfire with shading like the rest.