numerous bugfixes in pathfinder + multi level mazes
moving minions in a huge multilevel maze
Reverted Chunk.java
Merge PR #639 from @synopia - pathfinding updates and L&S models
Fixes #641.
Fixes that the default config file did not match the actual video settings on "Nice".
Upgrade logback to 1.0.13 to fix UnknownHostException on OS X

See http://jira.qos.ch/browse/LOGBACK-749 for details
Upgrade LWJGL to 2.9.0, fixing Issue #643
Merge pull request #642 from x3ro/update-logback

Upgrade logback to 1.0.13 to fix UnknownHostException on OS X
Merge PR #644 from @x3ro - LWJGL 2.9.0 upgrade to fix #643 on Macs
Add drowning mechanic to players.

* Players can stay in liquids for 15 seconds before drowning.
* Drowning damage occurs every second.
* Sounds are played when taking drowning damage.
* Breath meter is shown on the HUD.