Add a BiomeTypes interface
Add methods in ServerInterface to retrieve the implemented BiomeTypes
Add a getBiome method to LocalWorld and subclasses
Add /biomeinfo & /biomelist commands
Add a BiomeTypeMask
Closes#181
Added some missing license blocks
Added "and contributors" to all copyright notices.
Added $Id$ to files that were still missing it.
Changed "All rights reserved" to GPLv3 on Injector.java.