Version 1.0.7 -  2023-02-05 Qt.core.
Version 1.0.6 -  2022-04-14 Qt6 Compatibility.
Version 1.0.5 -  2022-02-16 Qt6 Compatibility. 
Version 1.0.4 -  2020-12-23 Miscellany.
Version 1.0.3 -  2020-07-30 Qt tweaks for small displays.
Version 1.0.2 -  2019-12-30 Technical changes after Python 3.8 testing with Calibre 4.99.2
Version 1.0.1 -  2019-04-26 Python 3 compatibility.
Version 1.0.0 -  2017-11-25 Initial release.