Fix a possible deadlock from approaching regions that do not exist.
Keep an in memory struct for columns which do not exist to prevent
continuously trying to reload them.
Keep track of the number of nonexistant columns in a region we are
tracking and use it to determine when to free regions. Fix /stats
reporting nonexistant columns. Prevent the same column from ever
being in the updater list twice.

This means it now takes two save ticks to write and then free dirty
columns.
Pull gamemode out of nbt
Fix desync after picking a block and placing it multiple times in creative mode
Don't allow harvesting in creative mode
Correct INVENTORY_SIZE
Add handler for Player Abilities packet - 0xca
Fix error checking in packet handlers, increase min. packet lengths
Store block and item information on disk and load them dynamically on startup
Add generic yml parser. Use yml for server config.
Forgot to remove old config
Update for Minecraft 1.6, with a nice workaround for chat
Finish block_init()
Allow previously unknown players to login
Fix up make install
Minecraft 1.6.2
Add more debug logs to packet_click_window. Allow clicking non slots.
Fix painting
Crafting
Fix out of source build