Bump to version 0.20.6
    
    	* Fix the maximum resolution on cameras with a scaler
    	  (stepwise frame sizes);
    	* Properly handle the camera video device, by checking
    	  their names at devfs and checking what V4L2 devices
    	  support video capture streams;
    	* Add a dialog to allow changing the video device. It
    	  is used when more than one cameras are available,
    	  and called at the beginning of camorama, if there's
    	  no previous value, or if it is invalid;
    	* When there are multiple cameras, add a new item at
    	  the <View> menu, allowing changing the camera at
    	  runtime.
    
    Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>