Introduce make_unique helper template
Nothing to see here, move along...
Remove useless data typedef 'bit'
Change class access to public (from protected)

  * Use cases such as if ( app.onInit() == false )
do not work when outside the inherited class
otherwise.
Finish GTK dialog messagebox code

	* Untested
Move mustLock, Lock, Unlock to Display class (from Canvas)

	* Renamed Lock, Unlock to all lowercase