This is such a useful widget ... I hope that it finds a wide audience for applications that need this! 👏
It might be a good thing to do if we had different names of libqhexedit.so depending on whether a library was compiled under debug or release mode, i.e. (for those of us who like to separate these):
build/Debug/libqhexeditd.so
...
build/Release/libqhexedit.so
NOTE: Added "d" to file name for debug version. At least on Windows, this is standard practice, AFAIK; on Linux, people will probably drop the source code into whatever project they are using...