Merge pull request #4228 from utkarshcmu/patch-1

Update CHANGELOG.md

CHANGELOG.md

@@ -23,6 +23,8 @@
 * **graph**: Right side legend height is now fixed at row height, closes [#1277](https://github.com/grafana/grafana/issues/1277)
 * **Table**: All content in table panel is now html escaped, closes [#3673](https://github.com/grafana/grafana/issues/3673)
 * **graph**: Template variables can now be used in TimeShift and TimeFrom, closes[#1960](https://github.com/grafana/grafana/issues/1960)
+* **Tooltip**: Optionally add milliseconds to timestamp in tool tip, closes[#2248](https://github.com/grafana/grafana/issues/2248)
+* **Opentsdb**: Support milliseconds when using openTSDB datasource, closes [#2865](https://github.com/grafana/grafana/issues/2865)
 
 ### Bug fixes
 * **Playlist**: Fix for memory leak when running a playlist, closes [#3794](https://github.com/grafana/grafana/pull/3794)