Update CHANGELOG.md

CHANGELOG.md

@@ -54,6 +54,7 @@
 ### Breaking change
 
 * **InfluxDB/Elasticsearch**: The panel & data source option named "Group by time interval" is now named "Min time interval" and does now always define a lower limit for the auto group by time. Without having to use `>` prefix (that prefix still works). This should in theory have close to zero actual impact on existing dashboards. It does mean that if you used this setting to define a hard group by time interval of, say "1d", if you zoomed to a time range wide enough the time range could increase above the "1d" range as the setting is now always considered a lower limit.
+* **Elasticsearch**: Elasticsearch metric queries without date histogram now return table formated data making table panel much easier to use for this use case. Should not break/change existing dashboards with stock panels but external panel plugins can be affected. 
 
 ## Changes