kafkacat v1.6.0

• Transactional Producer support (see below).
• Honour -k <key> when producing files (#197).
• Honour -o <offset> in -G high-level consumer mode (#231).
• Added -m <seconds> argument to set metadata/query/transaction timeouts.
• Allow schema.registry.url to be configured in config file and
  not only by -r (#220).
• Print broker-id message was produced to (if -v),
  or was consumed from (if -J).

Docker image

docker run -it edenhill/kafkacat:1.6.0 ...

Apache Kafka EOS / Transactional Producer support

Messages can now be produced in a single transaction if -X transactional.id=..
is passed to the producer in -P mode.

If kafkacat is terminated through Ctrl-C (or other signal) the transaction
will be aborted, while normal termination (due to stdin closing or after reading
all supplied files) will commit the transaction.

$ kafkacat -b $BROKERS -P -t mytopic -X transactional.id=myproducerapp
% Using transactional producer
This is a transactional message
And so is this
:)
[Press Ctrl-D]
% Committing transaction
% Transaction successfully committed