Player & enemy movement working

Okay, I've killed all of the player movement bugs. So you can now move around the screen. Hooray! No digging yet, though. (That's a whole different kettle of fish.)I was working on getting the enemy movement working, but there's a glitch with moving left and they just slide off the edge of the screen. Ooops. I've bypassed that code in this build, but I'll work more on it tonight. <EDIT> Fixed! New binary! I've also made the enemies white when they are hunting, and green when they are chasing.There's lots more code to do, but now I've got a stable base to work from I'll be able to incrementally add features and test them out. So from now on each new release will be (hopefully) bug free.