Changes from version 0.36...

Added sun and moon
Added automatic zombi spawn
Added automatic day/night cycle
Added code to crossfade music
Added system for modelized material types (torch/spike)
Added spike model
Added torch model / removed firepot
Added grimstone material type
Added crystal rock material type (undiggable)
Added music system
Added ogg vorbis support
Added rudimentary sound system
Added directory structure
Added Windows icon
Added roots material type
Added first-round fluid simulation
Added inverse mouse option
Added swimming and submersion
Changed lighting system to handle lights more efficiently
Changed random terrain generator to handle larger maps
Changed trees to be choppable
Changed fluid rendering system again (shore)
Changed fluid rendering system again (depth)
Changed pick so it damages zombies
Improved improvement to improve distance =P
Changed terrain rendering to improve distance
Changed material hardness system
Fixed bug with material collection
Fixed zombi attack bug
Fixed problem with TGA files not respecting origin