Changelog update

Author: edenhill

CHANGELOG.md

@@ -1,19 +1,26 @@
 # Confluent's Golang client for Apache Kafka
 
-## v1.6.0
+## v1.6.1
 
-v1.6.0 is a feature release adding support for KIP-429 Incremental rebalancing
-and KIP-480 Sticky producer partitioner.
+v1.6.1 is a feature release:
 
- - See [cooperative_consumer_example.go](examples/cooperative_consumer_example/cooperative_consumer_example.go)
+ * KIP-429: Incremental consumer rebalancing - see [cooperative_consumer_example.go](examples/cooperative_consumer_example/cooperative_consumer_example.go)
    for an example how to use the new incremental rebalancing consumer.
- - Bundles librdkafka v1.6.0 - see release notes for all enhancements and fixes.
+ * KIP-480: Sticky producer partitioner - increase throughput and decrease
+   latency by sticking to a single random partition for some time.
+ * KIP-447: Scalable transactional producer - a single transaction producer can
+   now be used for multiple input partitions.
 
-
-confluent-kafka-go is based on librdkafka v1.6.0, see the
+confluent-kafka-go is based on and bundles librdkafka v1.6.1, see the
 [librdkafka release notes](https://github.com/edenhill/librdkafka/releases/tag/v1.6.0)
 for a complete list of changes, enhancements, fixes and upgrade considerations.
 
+### Enhancements
+
+ * `go.delivery.report.fields=all,key,value,none` can now be used to
+   avoid copying message key and/or value to the delivery report, improving
+   performance in high-throughput applications (by @kevinconaway).
+
 
 ### Fixes