* **Datasource**: Only log connection string in dev environment [#16001](https://github.com/grafana/grafana/issues/16001)
* **DataProxy**: Add custom header (X-Grafana-User) to data source requests with the current username. [#15998](https://github.com/grafana/grafana/pull/15998), [@aocenas](https://github.com/aocenas)
* **DataProxy**: Make it possible to add user details to requests sent to the dataproxy [#6359](https://github.com/grafana/grafana/issues/6359) and [#15931](https://github.com/grafana/grafana/issues/15931)
* **DataProxy**: Adds oauth pass-through option for datasources. [#15205](https://github.com/grafana/grafana/pull/15205), [@seanlaff](https://github.com/seanlaff)
* **Explore**: Make it possible to close left pane of split view. [#16155](https://github.com/grafana/grafana/pull/16155), [@dprokop](https://github.com/dprokop)
* **Explore**: Move back / forward with browser buttons now works. [#16150](https://github.com/grafana/grafana/pull/16150), [@hugohaggmark](https://github.com/hugohaggmark)
* **Explore**: Update Loki labels when label selector is opened. [#16131](https://github.com/grafana/grafana/pull/16131), [@dprokop](https://github.com/dprokop)
* **Graph Panel**: New options for X-axis Min & Max (for histograms). [#14877](https://github.com/grafana/grafana/pull/14877), [@papagian](https://github.com/papagian)
* **Heatmap**: You can now choose to hide buckets with zero value. [#15934](https://github.com/grafana/grafana/pull/15934), [@alexanderzobnin](https://github.com/alexanderzobnin)
* **Heatmap**: `Reverse order` option for changing order of buckets [#15683](https://github.com/grafana/grafana/issues/15683)
@ -52,6 +55,7 @@
* **InfluxDB**: Always close request body even for error status codes. [#16207](https://github.com/grafana/grafana/pull/16207), [@ramongtx](https://github.com/ramongtx)
* **ManageDashboards**: Fix for checkboxes not appearing properly Firefox . [#15981](https://github.com/grafana/grafana/pull/15981), [@srid12](https://github.com/srid12)
* **TablePanel**: Column color style now works even after removing columns. [#16227](https://github.com/grafana/grafana/pull/16227), [@torkelo](https://github.com/torkelo)
* **TablePanel**: Fix for white text on white background when value is null. [#16199](https://github.com/grafana/grafana/pull/16199), [@peterholmberg](https://github.com/peterholmberg)