docs: def kata2hira(text, ignore=''):
      """Convert Full-width Katakana to Hiragana
  
      Parameters
      ----------
      text : str
          Full-width Katakana string.
      ignore : str
          Characters to be ignored in converting.
  
      Return
      ------
      str
          Hiragana string.
  
      Examples
      --------
      >>> print(jaconv.kata2hira('巴マミ'))
      巴まみ
      >>> print(jaconv.kata2hira('マミサン', ignore='ン'))
      まみさン
      """
      if ignore:
          k2h_map = _exclude_ignorechar(ignore, K2H_TABLE.copy())
          return _convert(text, k2h_map)
      return _convert(text, K2H_TABLE)