Accessors to root in scene
Added so scene nodes also contains a name
More work on Scene Interface
Cleaned up old GUI stuff
Started working on GUI framework
More features for GUI
Use new features in GUI framework
Done some fixes for problems caused by Window
Increased default far plane
Added drop-down menu support for GUI
Linked in Lua
Started working on Lua interface
Fixed so the engine classes are non-copyable
Fixed header guard comment
Changed where it looks for SFML
Updated state stack test
Moved min size to container instead.
Made sure correct version of OpenGL is used

If 3.3 is not supported an error message will be shown and now it will
also check for errors from GLEW.
Fix for glew using GLubyte instead of char
Forces application to use supported OpenGL.