Docs: Update changelog with v6.3.5 issues (#18827)

CHANGELOG.md

@@ -5,6 +5,20 @@
 * **Annotations**: There are some breaking changes in the annotations HTTP API for region annotations. Region
     annotations are now represented using a single event instead of two seperate events. Check HTTP docs for more details.
 
+# 6.3.5 (2019-09-02)
+
+### Upgrades
+* **Build**: Upgrade to go 1.12.9. [#18638](https://github.com/grafana/grafana/pull/18638), [@marcusolsson](https://github.com/marcusolsson)
+
+### Bug Fixes
+* **Dashboard**: Fixes dashboards init failed loading error for dashboards with panel links that had missing properties. [#18786](https://github.com/grafana/grafana/pull/18786), [@torkelo](https://github.com/torkelo)
+* **Editor**: Fixes issue where only entire lines were being copied. [#18806](https://github.com/grafana/grafana/pull/18806), [@kaydelaney](https://github.com/kaydelaney)
+* **Explore**: Fixes query field layout in splitted view for Safari browsers. [#18654](https://github.com/grafana/grafana/pull/18654), [@hugohaggmark](https://github.com/hugohaggmark)
+* **LDAP**: multildap + ldap integration. [#18588](https://github.com/grafana/grafana/pull/18588), [@markelog](https://github.com/markelog)
+* **Profile/UserAdmin**: Fix for user agent parser crashes grafana-server on 32-bit builds. [#18788](https://github.com/grafana/grafana/pull/18788), [@marcusolsson](https://github.com/marcusolsson)
+* **Prometheus**: Prevents panel editor crash when switching to Prometheus datasource. [#18616](https://github.com/grafana/grafana/pull/18616), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Prometheus**: Changes brace-insertion behavior to be less annoying. [#18698](https://github.com/grafana/grafana/pull/18698), [@kaydelaney](https://github.com/kaydelaney)
+
 # 6.3.4 (2019-08-29)
 
 * **Security**: Urgent security patch release. Please read more in our [blog](https://grafana.com/blog/2019/08/29/grafana-5.4.5-and-6.3.4-released-with-important-security-fix/)