***Variables**: Skip unneeded extra query request when de-selecting variable values used for repeated panels [#8186](https://github.com/grafana/grafana/issues/8186), thx [@mtanda](https://github.com/mtanda)
***Postgres/MySQL/MSSQL**: Use floor rounding in $__timeGroup macro function [#12460](https://github.com/grafana/grafana/issues/12460), thx [@svenklemm](https://github.com/svenklemm)
***Postgres/MySQL/MSSQL**: Use metric column as prefix when returning multiple value columns [#12727](https://github.com/grafana/grafana/issues/12727), thx [@svenklemm](https://github.com/svenklemm)
***Postgres/MySQL/MSSQL**: New $__timeGroupAlias macro. Postgres $__timeGroup no longer automatically adds time column alias [#12749](https://github.com/grafana/grafana/issues/12749), thx [@svenklemm](https://github.com/svenklemm)
***Postgres/MySQL/MSSQL**: Escape single quotes in variables [#12785](https://github.com/grafana/grafana/issues/12785), thx [@eMerzh](https://github.com/eMerzh)
***MySQL/MSSQL**: Use datetime format instead of epoch for $__timeFilter, $__timeFrom and $__timeTo macros [#11618](https://github.com/grafana/grafana/issues/11618)[#11619](https://github.com/grafana/grafana/issues/11619), thx [@AustinWinstanley](https://github.com/AustinWinstanley)
***Postgres**: Escape ssl mode parameter in connectionstring [#12644](https://github.com/grafana/grafana/issues/12644), thx [@yogyrahmawan](https://github.com/yogyrahmawan)
...
...
@@ -36,6 +37,10 @@
***Graph**: Option to hide series from tooltip [#3341](https://github.com/grafana/grafana/issues/3341), thx [@mtanda](https://github.com/mtanda)
***UI**: Fix iOS home screen "app" icon and Windows 10 app experience [#12752](https://github.com/grafana/grafana/issues/12752), thx [@andig](https://github.com/andig)
### Breaking changes
* Postgres datasource no longer automatically adds time column alias when using the $__timeGroup alias. However, there's code in place which should make this change backward compatible and shouldn't create any issues.
