ChangeLog.txt
2.1a - Initial release
2.1b - Fixed biomes.  Previously numerous biomes were mistakenly set to plains, even in the nether
     - Surrounded the playing area (both The Overworld and The Nether) with bedrock walls.  This makes clear the boundaries of the playing area.
2.1c - Changed biome in area surrounding nether spawn point from Warped Forest to Nether Wastes so that nether mobs will spawn.