Fix/Cleanup for A* implementation

Tired of your clients, images, and worlds having an obscene blemish known to many as "bestF?"  Then this is the commit for you!  Not only does it improve the readability of the PriorityQueue structure*, but it also r
removes that needless blemish from your otherwise perfect** code!  Only $0.00! But you'd better hurry, this deal ends soon!

* comments cost extra
** source: your mother