Fix anvil collisions

This fixes the server incorrectly moving the player out of an anvil when touching it on the side. The server used the rotation of the last placed anvil instead the of the rotation of the anvil the player was touching.
Fix ItemStack Unbreakable Code.

This code needs brackets to be compiled correctly.
Take 2 at fixing unbreakable code
Add more code to try and Debug [Mojang] Crash Reports Crashing
Replace AutoSave Mechanism

The problem here is that MinecraftServer.save(..), will attempt to sleep whilst all pending chunks are written to disk, however due to various and complicated bugs, it will wait for an incorrect amount of chunks, which may cause it to sleep for an overly long amount of time. Instead we will mimic the save-all command in its behaviour, which is both safe and performant.
Remove accidentally added code
Tweak tab complete disabled to only disable completion of the /command section, and not any subsequent arguments to the command, such as player names or plugin provided completions.
Revert previous change to clear chunk list on the end of each tick, make it configurable instead.
Whilst the new behaviour was technically correct as it prevented the possibility of the chunk tick list actually increasing over time, it introduced a few issues, namely the fact that it slowed growth to unreasonable levels, and interfered with the values which server admins have finally tuned, and come to enjoy over the last few years.
If it is absolutely essential that growth be halted and ticking reduced as much as possible, the config option is there for power users.
If we wish to 'fix' this by default in the future, a new chunk ticking algorithm, which actually has meaningful config options should be designed.
Fix ConcurrentModificationException while being idle kicked in a vehicle
Move replace-commands to commands.replace-commands
Upstream merge
Block data values that crash the client
Add getRawAddress back
Add /tellraw to the vanilla commands defaults
Support vanilla's direction tag on fireballs
Update chat link fix to use Bukkit's current system instead of the old one
Port Optimize NextTickList processing patch for 1.7.x
Merge pull request #95 from SpigotMC/optimize-nextticklist

Port Optimize NextTickList processing patch for 1.7.x
Add TILE_DUST to the particle API
Remove NextTickList processing whilst we look into an issue.

http://www.spigotmc.org/threads/lwc-locks-randomly-going-missing-after-using-1249.10505/

Catch stalling on corrupted map data / NBT arrays.