tzDecoderV0 :: D.Decoder s Tz
tzDecoderV0 = do
  D.decodeListLenOf 2
  (,) <$> (fromIntegral <$> D.decodeInt8) <*> (fromIntegral <$> D.decodeInt8)
tzDecoderV0 :: D.Decoder s Tz
tzDecoderV0 = do
  D.decodeListLenOf 2
  (,) <$> (fromIntegral <$> D.decodeInt8) <*> (fromIntegral <$> D.decodeInt8)
tzDecoderV0 = do
  D.decodeListLenOf 2
  (,) <$> (fromIntegral <$> D.decodeInt8) <*> (fromIntegral <$> D.decodeInt8)