-added offense and defense.
-predators check to make sure offense is greater than target defense.
- color is inherited.  this should show lineage, hopefully.
- radius starts out small, and they grow up to their max size.  age or radius does not yet influence targeting, offense or defense.
-baby bugs start out further from parents so they are not eaten immediately
- new formula for eating.
-renamed local variables for predator hunting to "hunter" and "prey"