[VOTE] KIP-313: Add KStream.flatTransform and KStream.flatTransformValues

[Bruno Cadonna]

Hi list,

I would like to voting on this KIP.

I created a first PR[1] that adds flatTransform. Once I get some
feedback, I will start work on flatTransformValues.

Best regards,
Bruno

[1] https://github.com/apache/kafka/pull/5273