Implemented ar() and kr() on Out.
Implemented ar() and kr() on Out.

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