I made a new release (0.0.8) ; you'll find it
at the usual place...
Changelog :
- split by letter for all catalogs, when the --maxBeforeSplit option is reached
- added icons in all the elements of the catalogs
- added icons in the HTML catalogs, too
- added a check to rebuild thumbnails when --thumbnailHeight has changed
- changed the way the "split by letter" catalog entries are described
- added the --nogeneratefiles options, to skip download links in the OPDS catalogs (useful for demos)
- added the --nomixbooks option, when set the books and their containers are never mixed (by inserting additional container levels)
- enhanced authors, tags, series, and all books container summaries
I'm preparing a demo catalog, which will be referenced in
the tool's website ; I'll let you know when it'll be ready.
For the people who would like to help in translating the tool, here are the translation files (attached) ; I'm ready to help anyone willing to help me
Last but not least, I'd like to thank everyone who supported me and specially Ian, who was kind and patient and whose excellent ideas were the base of almost all the options of the tool

Thanks Ian !
Cheers,
David.