Font interface for scripts
Added main screen (not implemented)
Added scripting reference for font API.
Support middle mouse button
Small fixes
Slice image drawing method
size_t instead of int (cannot have negative number of players :)
cleanup some formatting (more readable)
Merge branch 'master' of https://github.com/yvt/openspades
Fixed a bug that made Vector2 unusable in script
Added Cross(Vector3, Vector3) for scripting, and some fixes
GUI framework
Field input control
Added list view control
Added ToString function for script
Message box
New font: SquareFont
Updated GUI
Access cvars from script
GUI bug fix
Main screen update