mob spawn rates

Looky ari, I know this will annoy you, but once again it's just a suggestion for the future: double hostile mob spawns, and (possibly) allow them to spawn on leaves somehow. I think the potential for more mobs is good, so that players caan gain exp faster, and then raise the exp requirements slightly for each level.

Anyways, thanks for reading it.

I have been trying to fix this all weekend. Be patient.