docs: def config(param_map, mastercode=DEFAULT_MASTERCODE):
      """Takes a dictionary of {Config.key: value} and
      returns a dictionary of processed keys and values to be used in the
      construction of a POST request to FlashAir's config.cgi"""
      pmap = {Config.mastercode: mastercode}
      pmap.update(param_map)
      processed_params = dict(_process_params(pmap))
      return processed_params