Load ASSIMP library, redirect logging to our logger. You can pass a null logger if you don't want logging.
Releases the ASSIMP library and all resources. All resources should have been released at this point, since you won't be able to call any ASSIMP function afterwards.
Create one to use the ASSIMP libary. Owns both the loader and logging redirection. This object is passed around to other ASSIMP wrapper objects to ensure library loading.