Force a refresh of all elements in a given mode when the mode changes. This makes sure the VRAM is always current for that mode.
Added a very simple loading screen with progress bar to the simple display demo
Implemented deferred attachment for graphics modes that don't need it
Moved initial state hide flag onto cube member.
Removed bitmask to extract mode - no need to pass any other state bits, element mode should be treated as a constant.
Moved to new scene builder API with mode flags defined in a separate memory area.
Support for the element autoupdate flag