Radiosity bug fix
Removed radiosity's envelope cull
Waterlevel blocks now use the same color as the groundlevel blocks
Hold aiming
Fixed [this issue](https://github.com/yvt/openspades/issues/52)
Added AngelScript
Sparse Shadow Maps
Official "pak" files are now always loaded first
Added AngelScript add-ons
ScriptManager is added. Some of math/utility functions and structures were added to the script engine.