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/qt/widget/frame.hpp

@@ -5,6 +5,8 @@ namespace hiro {
 struct pFrame : pWidget {
   Declare(Frame, Widget)
 
+  auto append(sLayout layout) -> void;
+  auto remove(sLayout layout) -> void;
   auto setEnabled(bool enabled) -> void override;
   auto setGeometry(Geometry geometry) -> void override;
   auto setText(const string& text) -> void;