Add capability of consuming from an application-specified offset

[mjkrumlauf]

Make use of KafkaConsumer.seek(TopicPartition, long) to allow the consuming application to start consuming a topic from a specified offset. This would be extremely useful in providing yet more decoupling of producers from consumers.

See https://kafka.apache.org/090/javadoc/index.html?org/apache/kafka/clients/consumer/KafkaConsumer.html

[danielwegener]

This, together with #61 would solve #5

[kciesielski]

Thanks @mjkrumlauf, this is an important feature to cover.

[bchazalet]

+1

[13h3r]

Looks like this already in master

[mjkrumlauf]

Yes - closing issue.