Version 1.3
1. Added a transform showing only the gray bits of an image.
2. CRC checks on PNGs now done, and correct CRC shown if wrong.
3. Image combiner added
4. Dialogs, etc are now resizable

Version 1.2
Minor bug updates, previous version broke the frame browser

Version 1.1

1. added left and right arrow keys to main screen, frame viewer and
stereo transform to control left and right buttons.
2. scrollbars added to frame browser, stereogram solver and main panel.
