docs: def configure(level=logging.WARNING, handler=None, formatter=None):
          """Configure Logr
  
          @param handler: Logger message handler
          @type handler: logging.Handler or None
  
          @param formatter: Logger message Formatter
          @type formatter: logging.Formatter or None
          """
          if formatter is None:
              formatter = LogrFormatter()
  
          if handler is None:
              handler = logging.StreamHandler()
  
          handler.setFormatter(formatter)
          handler.setLevel(level)
          Logr.handler = handler