When NzContextParameters.debugMode is true, Nazara will receive OpenGL's
debug message and send them to Nazara's log
NzString::Pointer now have the "0x" prefix
Added support for ARB_texture_storage extension
Nazara now try to load core texture 3D before trying to load
EXT_texture3D
Added NazaraNotice macro, writing raw text into Nazara's log
Added NzContext::Destroy (called in Create)