Update changelog

CHANGELOG.md

@@ -9,6 +9,10 @@ New Features:
    ([#431](https://github.com/Shopify/sarama/pull/431)).
  - The partition-consumer now exposes the high water mark offset value returned
    by the broker ([#339](https://github.com/Shopify/sarama/pull/339)).
+ - Added a `kafka-console-consumer` tool capable of handling multiple
+   partitions, and deprecated the now-obsolete `kafka-console-partitionConsumer`
+   ([#439](https://github.com/Shopify/sarama/pull/439),
+   [#442](https://github.com/Shopify/sarama/pull/442)).
 
 Improvements:
  - The producer's logging during retry scenarios is more consistent, more