Made model copyable.
Cleaned up scene access and removed scene duplicate.
Made mesh rendering thread safe.
Added + - operators to Matrix and refactored for space.
Updated SystemActionQueue.

- Added exception class.
- Separated implementation to inline file.
Added vertex list access from Mesh.
Added a simple bounding box math type.
Added bounds checking for model.
Added rotation transform factory method.
Committed missing header changes to Scene.
Added rotation to sys test.
Added missing box typedef in gr types.
Added constructors and destructor to ResourceLoader.
Fixed interrupt current for non-polymorph threads.
Added method to remove model from scene.
Added constructors to MeshManager.
Moved interruption exception away from detail namespace.
Added missing include.
Fixed assignment operator for matrix.
Estetic update to System.hpp