unknown sub command: help

usage:
  tir-csv parse   [--delimiter DELIM] [file|-]
  tir-csv unparse [--delimiter DELIM] [file|-]
  tir-csv --version

Options:
  --delimiter DELIM   Field delimiter (default: ',')
                      Use '\t' for TSV.

If file is omitted or '-', parse reads from stdin.
If file is omitted or '-', unparse writes to stdout.

