Add Chunk Spawn Chance variable to each creature type. Controls how oftren this entity will chunks spawn, if at all. 0 == never, 1.0 == always.
Merge branch 'dev' into jas1.6port1.5
Fix KillAll command filter not filtering.
Merge branch 'dev' into jas1.6port1.5
Fixup Package Name lookup to cache by BiomeID. Should incompatability issue with WrapperBiomes in Mystcraft et al.
Merge branch 'dev' into jas1.6port1.5
Fix spawnlistentries not saving optional parameters.
Merge branch 'dev' into jas1.6port1.5