docs: def help_version(self):
          """Help and version info
          """
          if (len(self.args) == 1 and self.args[0] in ["-h", "--help"] and
                  self.args[1:] == []):
              options()
          elif (len(self.args) == 1 and self.args[0] in ["-v", "--version"] and
                  self.args[1:] == []):
              prog_version()
          else:
              usage("")