Thanks, but the idea was using the latest and greatest instead of 0.9.13 from 2019 if it still compiles for Win32.
https://github.com/Sigil-Ebook/Sigil...ses/tag/0.9.13
If source code is no longer compilable for that platform, I'll use 0.9.13 until I get the courage to move the whole shebbang to a newer computer.