docs: adds note about closing #5677

CHANGELOG.md

@@ -9,6 +9,7 @@
 * **Victorops**: Add VictorOps Notification Integration [#6411](https://github.com/grafana/grafana/issues/6411)
 * **Singlestat**: New aggregation on singlestat panel [#6740](https://github.com/grafana/grafana/pull/6740)
 * **Cloudwatch**: Make it possible to specify access and secret key on the data source config page [#6697](https://github.com/grafana/grafana/issues/6697)
+* **Table**: Added Hidden Column Style for Table Panel [#5677](https://github.com/grafana/grafana/pull/5677)
 
 # 4.0-stable (2016-11-29)