Version 1.0.14 - 2023-01-14     Qt.core.
Version 1.0.13 - 2022-04-13     Qt6 Compability; Minimum Calibre Version now 6.0.0   
Version 1.0.12 - 2022-01-24     Qt6 compatibility. Calibre minimum version 5.99.3.     
Version 1.0.11 - 2020-12-21     Miscellany.     
Version 1.0.10 - 2019-12-20     Technical changes after Python 3.8 testing with Calibre 4.99.2
Version 1.0.9 -  2019-04-25     Python 3 compatibility.  Calibre minimum version 3.41.3 required.
Version 1.0.8 -  2017-05-10     Added a hidden menu to enable Preferences > Keyboard shortcut.
Version 1.0.7 -  2017-05-09     Tweak.
Version 1.0.6 -  2017-05-05     Allow themes with user-defined icons.
Version 1.0.5 -  2016-04-07     Technical changes.
Version 1.0.4 -  2016-03-17     Technical changes.
Version 1.0.3 -  2016-03-09     Scroll bars and other enhancements.
Version 1.0.2 -  2016-03-09     Drop Target made bigger.
Version 1.0.1 -  2016-03-09     Tweaks.
Version 1.0.0 -  2016-03-08     Initial release.