Fix image saving with PNGImageEncoder and Python3.x
Fix image saving with PNGImageEncoder and Python3.x

infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore