Docs: change log for release v6.5.2 (grafana#21028)

Author: mckn

CHANGELOG.md

@@ -4,6 +4,28 @@
 
 * **Graphite**: Add Metrictank dashboard to Graphite datasource
 
+# 6.5.2 (2019-12-11)
+
+### Bug Fixes
+  * **Alerting**: Improve alert threshold handle dragging behavior. [#20922](https://github.com/grafana/grafana/pull/20922), [@torkelo](https://github.com/torkelo)
+  * **AngularPanels**: Fixed loading spinner being stuck in some rare cases. [#20878](https://github.com/grafana/grafana/pull/20878), [@torkelo](https://github.com/torkelo)
+  * **CloudWatch**: Fix query editor does not render in Explore. [#20909](https://github.com/grafana/grafana/pull/20909), [@davkal](https://github.com/davkal)
+  * **CloudWatch**: Remove illegal character escaping in inferred expressions. [#20915](https://github.com/grafana/grafana/pull/20915), [@sunker](https://github.com/sunker)
+  * **CloudWatch**: Remove template variable error message. [#20864](https://github.com/grafana/grafana/pull/20864), [@sunker](https://github.com/sunker)
+  * **CloudWatch**: Use datasource template variable in curated dashboards. [#20917](https://github.com/grafana/grafana/pull/20917), [@sunker](https://github.com/sunker)
+  * **Elasticsearch**: Set default port to 9200 in ConfigEditor. [#20948](https://github.com/grafana/grafana/pull/20948), [@papagian](https://github.com/papagian)
+  * **Gauge/BarGauge**: Added support for value mapping of "no data"-state to text/value. [#20842](https://github.com/grafana/grafana/pull/20842), [@mckn](https://github.com/mckn)
+  * **Graph**: Prevent tooltip from being displayed outside of window. [#20874](https://github.com/grafana/grafana/pull/20874), [@mckn](https://github.com/mckn)
+  * **Graphite**: Fixes error with annotation metric queries . [#20857](https://github.com/grafana/grafana/pull/20857), [@dprokop](https://github.com/dprokop)
+  * **Login**: Fix fatal error when navigating from reset password page. [#20747](https://github.com/grafana/grafana/pull/20747), [@peterholmberg](https://github.com/peterholmberg)
+  * **MixedDatasources**: Do not filter out all mixed data sources in add mixed query dropdown. [#20990](https://github.com/grafana/grafana/pull/20990), [@torkelo](https://github.com/torkelo)
+  * **Prometheus**: Fix caching for default labels request. [#20718](https://github.com/grafana/grafana/pull/20718), [@aocenas](https://github.com/aocenas)
+  * **Prometheus**: Run default labels query only once. [#20898](https://github.com/grafana/grafana/pull/20898), [@aocenas](https://github.com/aocenas)
+  * **Security**: Fix invite link still accessible after completion or revocation. [#20863](https://github.com/grafana/grafana/pull/20863), [@aknuds1](https://github.com/aknuds1)
+  * **Server**: Fail when unable to create log directory. [#20804](https://github.com/grafana/grafana/pull/20804), [@aknuds1](https://github.com/aknuds1)
+  * **TeamPicker**: Increase size limit from 10 to 100. [#20882](https://github.com/grafana/grafana/pull/20882), [@hendrikvh](https://github.com/hendrikvh)
+  * **Units**: Remove SI prefix symbol from new milli/microSievert(/h) units. [#20650](https://github.com/grafana/grafana/pull/20650), [@zegelin](https://github.com/zegelin)
+
 # 6.5.1 (2019-11-28)
 
 ### Bug Fixes