Added explicit try/except handling around opening of output files.

Added logic to support including external password and group files.

Added logic to trap for invalid (non-integer) values for -g and -u arguments.

Added code to error out if any command line arguments remain after processing options.

Reordered parsing of in/exclusion arguments to be keyed to name rather than ID. ...

Corrected command line argument to set starting UID to use -u rather than -p.
Copy of command line used to generate file is now included as comment.
Added logic to default to suppressing user accounts that do not permit login.

Completed a possible implementation for command line ex/inclusion.

Installed command line support and some of the logic for ...

explicitly listing included- and excluded users or groups.

Changed default filenames to start with '.ht'.

Added hostname to timestamp in each output file.

Added code to produce output files, observing STARTGID and STARTUID. ...

Added command line options to set STARTGID and STARTUID.

Changed how debug output is formatted.

Initial cut of basic group and user database extraction logic.

Initial Version