Bukkit

• Hopefully reduced the memory requirement, possibly significantly. The generator throws out the generation variables and keeps only the blocks once an island is finished being generated.
• Added source comments to the source code for the Island and BiomeDescription classes, the biggest and most important ones to understand.

• Uses more than the normal amount of memory and generates slower than a normal terrain generator (now less than before)
• Sometimes the spawn position puts you in the air and you fall to your death (Multiverse fixes this, I'm looking into it)

For those who don't know how to use generators, put this in your bukkit.yml file:

worlds:
  world:
    generator: AeroGen

or learn about the multiverse plugin