Not having the optional dependencies installed led to a series of dummy
images being created for no good reason. Fixed so that optional nodes
are only registered when they should exist.
Heaven biomes fully implemented! Stairs is now a dependency, adding a
handful of new stair nodes. Pools of healing spring water can now be
found in the heaven biome, and pregenerated buildings appear as well.
Complete overhaul of the lake generator, much more efficient now.
Sandstone biome added, look for it in low humidity areas. Heaven biome
implementation started, uncomment the code to preview.
With credit to paramat, now the noise values are even better tweaked,
and the islands are no longer cut off at chunk boundaries. Not to
mention insane landscapes.
Massive changes to island structure noise parameters, including taller
hills, larger caves, and rougher terrain, which also leads to more
lakes. Also added Cavorite and Silicon ores.
