Update to 20160106 OS X Preview for Developers release.

byuu says:

New update. Most of the work today went into eliminating hiro::Image
from all objects in all ports, replacing with nall::image. That took an
eternity.

Changelog:
- fixed crashing bug when loading games [thanks endrift!!]
- toggling "show status bar" option adjusts window geometry (not
  supposed to recenter the window, though)
- button sizes improved; icon-only button icons no longer being cut off

hiro/cocoa/widget/canvas.hpp

@@ -31,7 +31,7 @@ struct pCanvas : pWidget {
   auto setDroppable(bool droppable) -> void;
   auto setGeometry(Geometry geometry) -> void override;
   auto setGradient(Gradient gradient) -> void;
-  auto setImage(const Image& image) -> void;
+  auto setIcon(const image& icon) -> void;
   auto update() -> void;
 
   auto _rasterize() -> void;