Implemented Buffer.allocate_from_file(), .get_frame() and .write().
Implemented Buffer.allocate_from_file(), .get_frame() and .write().

andrewyoung1991/supriya,andrewyoung1991/supriya,Pulgama/supriya,josiah-wolf-oberholtzer/supriya,Pulgama/supriya,andrewyoung1991/supriya,Pulgama/supriya,Pulgama/supriya