CHANGELOG.md in sensu-plugins-elasticsearch-0.4.1 vs CHANGELOG.md in sensu-plugins-elasticsearch-0.4.2

@@ -3,9 +3,13 @@
 
 This CHANGELOG follows the format listed at [Keep A Changelog](http://keepachangelog.com/)
 
 ## Unreleased
 
+## [0.4.2] - 2016-01-27
+### Added
+- metrics-es-cluster.rb: Added i/o cluster stats
+
 ## [0.4.1] - 2016-01-26 
 ### Fixed
 - metrics-es-cluster.rb: Allow metrics to be gathered even if the cluster has zero documents. Also updated cache name for Elasticsearch 2.0+
 - metrics-es-node-graphite.rb: Update node stats for Elasticsearch 2.0+