Truncate debug display of player position to 2 decimals
Merge pull request #779 from msteiger/debug

Truncate debug display of player position to 2 decimals
Implemented purgeWorld command to recreate world at runtime. (#780)
Fixed two issues with purgeWorld - incorrect sending of unload events on incomplete chunks, and attempt to remove the world folder even if it doesn't exist.
Upgrade Vecmath to 1.5.2

Closes #778
Merge pull request #782 from msteiger/vecmath

Upgrade Vecmath to v1.5.2