docs: def get_argument_parser(prog=None, desc=None, formatter_class=None):
      """Create an argument parser.
  
      Parameters
      ----------
      prog: str
          The program name.
      desc: str
          The program description.
      formatter_class: argparse formatter class, optional
          The argparse formatter class to use.
  
      Returns
      -------
      `argparse.ArgumentParser`
          The arguemnt parser created.
      """
      if formatter_class is None:
          formatter_class = argparse.RawTextHelpFormatter
  
      parser = argparse.ArgumentParser(
          prog=prog, description=desc,
          formatter_class=formatter_class, add_help=False
      )
  
      g = parser.add_argument_group('Help')
      g.add_argument('-h', '--help', action='help',
                     help='Show this help message and exit.')
  
      v = genometools.__version__
      g.add_argument('--version', action='version', version='GenomeTools ' + v,
                     help='Output the GenomeTools version and exit.')
  
      return parser