Attempted Overhaul

Tried to rework some stuff:
- Added couple extra methods here and there and general fine tuning.
- Added back concept of 'activeChunks' vs 'loadedChunks' so some are in
memory
-> BUG! When checking isCreated (and yes, I remade your old method but I
don't see my problem. . . )
- Renamed WORLDSIZE to WORLDRADIUS since it made more sense in the
context
- Changed intial point to put you back in first chunk (0,0,0) just for
testing purposes
- Changed loadChunk to loadChunkToMem and added method for loading chunk
into active list called loadChunkToActive
- Added back removeChunk key that you said caused error, haven't been
able to diagnose whether or not it was able to reach that.