2012-09-19: initial release
Instead of selecting the new value via an edit area, you select it from a dropdown list.
2012-09-23: 3.0.1
Resized widgets to all fit on one screen w/o scrolling.
2012-11-07: version 3.0.2
Changed selection to be from a list of cryptoquips.
2012-11-24: version 3.0.3
Improvements to screen displays
2012-12-01: version 3.0.4
Improvements to screen displays
2013-05-19: version 3.0.5
Added more features