initial addition of Script class, much of DartVM’s functionality has been moved there. DartVM is once again a singleton
glNext rotate uses radians, 0.8.6< is degrees
remove timer profile code and other minor cleanup
Made NativeFunctionMap and ReceiveMapCallback typedefs top-level in cidart namespace
Merge pull request #7 from richardeakin/script_class

Added Script class, use this instead of DartVM to load classes