Enhancements

• More efficient Elasticsearch span reporter #287
• Don't log Elasticsearch credentials (2nd take) #282. Thx @gggopi
• Add (internal) health checks to stagemonitor #286
• Set default number of shards to 1 and replicas to 0 for Elasticsearch indices
• Don't log an error when a Elasticsearch configuration profile does not yet exist in the index

Breaking Changes

• More efficient mapping of (HTTP) parameters in Elasticsearch #288

Bug Fixes

• Fix potential StringIndexOutOfBoundsException in StringUtils.toCommaSeparatedString
• Use _forcemerge instead of _optimize to be compliant with Elasticsearch 5

Internal

• Update Gradle to 4.0.1