0.06  2025-10-08 -added check for LaTeX errors
0.05  2025-08-13 -added check for unknown main filenames
0.04  2025-08-02 -do not use the lapp module (simplifies code)
0.03  2025-07-19 -rennamed file
                 - define lualatex as command, if no "%! HV" line exists
0.02  2025-07-18 -Initial version
