Added player pings
Update Player.java to fix syntax error
Renamed DefaultServerLogger to Log4jServerLogger; Implemented
MinecraftVersion.toString()
Added an utility interface: Validate<P>
Added flat generator preset parsing
Bulk work needed: Update BiomeType.java!

I really miss @jose-vm who used to do this kind of almost-robotic work!
:grin:
Come on, people who want to contribute to BlockServer but don't know
Java very well, time for you!

Add lines after line 9 with things like lines 8 and 9, with the data
provided below! (Don't copy Unknown Biome)
Improve ChunkSender