Autoload library contains an abstract wrapper for Composer's generated autoloader.

• AutoloaderInterface provides abstract ability use and modify the autoloader class.
• AutoloaderRegistry allows the same instance of the autoloader to put accessed across the code base.
• ClassLoaderWrapper wraps around Composer's generated autoloader in order to insulate it.
• Populator fills in PSR-0 and PSR-4 standard namespace-directory mappings for the autoloader.