Removed ultra-close-range sound playing for every lava block placed: the other sound call is the one that's audible
Rephrased public 'entering home chunk' message to be 'In my home chunk (# of #)'
Spawn radius is now a function of how many home chunks exist. Rapidly increases as new home chunks are added, passing 1000 block radius at around 100 home chunks. In this way it is kept local in early play and only expanded as needed.