Remove public snapshot lock

A few mild performance improvements

Signed-off-by: Jack Huey kitskub@gmail.com
Remove a bunch of unused classes

Only use 1 thread if that's all we need

Signed-off-by: Jack Huey kitskub@gmail.com
Add the ability to load/gen chunks/regions without waiting for them to finish

LoadOption is now a class
SpoutColumn may intermittently not be generated, but only created
Move some of the column stuff to SpoutServerWorld

Signed-off-by: Jack Huey kitskub@gmail.com
Slight optimizations

Signed-off-by: Jack Huey kitskub@gmail.com
Add back these classes because Vanilla needs them

Signed-off-by: Jack Huey kitskub@gmail.com
Cleanup of SpoutColumn and RegionGenerator

Signed-off-by: Jack Huey kitskub@gmail.com