Snapshot 2 - Bug fixes

Just fixes a few critical bugs present in snapshot 1.

Please note; The date of this release is wrong because I changed the tag name. See the commit for the actual date.

Bugs Fixed

• chunks with negative coordinates weren't rendering
• the client required re-logging into the mojang account quite often
• empty arrays in some packets were causing fatal errors and crashing the client
• should now work pretty well for normal vanilla servers

Known Bugs

• servers like hypixel and the hive don't work because of a flaw in how downloading the terrain is currently performed. the lobbies are sky islands and contain empty chunks with messes with my maths