***Prometheus**: Add support for instant queries [#5765](https://github.com/grafana/grafana/issues/5765), thx [@mtanda](https://github.com/mtanda)
***Prometheus**: Add support for instant queries [#5765](https://github.com/grafana/grafana/issues/5765), thx [@mtanda](https://github.com/mtanda)
***Cloudwatch**: Add support for alerting using the cloudwatch datasource [#8050](https://github.com/grafana/grafana/pull/8050), thx [@mtanda](https://github.com/mtanda)
***Cloudwatch**: Add support for alerting using the cloudwatch datasource [#8050](https://github.com/grafana/grafana/pull/8050), thx [@mtanda](https://github.com/mtanda)
***Pagerduty**: Include triggering series in pagerduty notification [#8479](https://github.com/grafana/grafana/issues/8479), thx [@rickymoorhouse](https://github.com/rickymoorhouse)
***Pagerduty**: Include triggering series in pagerduty notification [#8479](https://github.com/grafana/grafana/issues/8479), thx [@rickymoorhouse](https://github.com/rickymoorhouse)
***Timezone**: Time ranges like Today & Yesterday now work correctly when timezone setting is set to UTC [#8916](https://github.com/grafana/grafana/issues/8916), thx [@ctide](https://github.com/ctide)
## Minor
## Minor
***SMTP**: Make it possible to set specific EHLO for smtp client. [#9319](https://github.com/grafana/grafana/issues/9319)
***SMTP**: Make it possible to set specific EHLO for smtp client. [#9319](https://github.com/grafana/grafana/issues/9319)
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# 4.5.2 (2017-09-22)
# 4.5.2 (2017-09-22)
## Fixes
## Fixes
***Graphite**: Fix for issues with jsonData & graphiteVersion null errors [#9258](https://github.com/grafana/grafana/issues/9258)
***Graphite**: Fix for issues with jsonData & graphiteVersion null errors [#9258](https://github.com/grafana/grafana/issues/9258)
***Graphite**: Fix for Grafana internal metrics to Graphite sending NaN values [#9279](https://github.com/grafana/grafana/issues/9279)
***Graphite**: Fix for Grafana internal metrics to Graphite sending NaN values [#9279](https://github.com/grafana/grafana/issues/9279)
***HTTP API**: Fix for HEAD method requests [#9307](https://github.com/grafana/grafana/issues/9307)
***HTTP API**: Fix for HEAD method requests [#9307](https://github.com/grafana/grafana/issues/9307)
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***MySQL**: Fixed issue with query editor not showing [#9247](https://github.com/grafana/grafana/issues/9247)
***MySQL**: Fixed issue with query editor not showing [#9247](https://github.com/grafana/grafana/issues/9247)
## Breaking changes
## Breaking changes
***Metrics**: The metric structure for internal metrics about Grafana published to graphite has changed. This might break dashboards for internal metrics.
***Metrics**: The metric structure for internal metrics about Grafana published to graphite has changed. This might break dashboards for internal metrics.
# 4.5.0 (2017-09-14)
# 4.5.0 (2017-09-14)
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### Breaking change
### Breaking change
***InfluxDB/Elasticsearch**: The panel & data source option named "Group by time interval" is now named "Min time interval" and does now always define a lower limit for the auto group by time. Without having to use `>` prefix (that prefix still works). This should in theory have close to zero actual impact on existing dashboards. It does mean that if you used this setting to define a hard group by time interval of, say "1d", if you zoomed to a time range wide enough the time range could increase above the "1d" range as the setting is now always considered a lower limit.
***InfluxDB/Elasticsearch**: The panel & data source option named "Group by time interval" is now named "Min time interval" and does now always define a lower limit for the auto group by time. Without having to use `>` prefix (that prefix still works). This should in theory have close to zero actual impact on existing dashboards. It does mean that if you used this setting to define a hard group by time interval of, say "1d", if you zoomed to a time range wide enough the time range could increase above the "1d" range as the setting is now always considered a lower limit.
***Elasticsearch**: Elasticsearch metric queries without date histogram now return table formated data making table panel much easier to use for this use case. Should not break/change existing dashboards with stock panels but external panel plugins can be affected.
***Elasticsearch**: Elasticsearch metric queries without date histogram now return table formated data making table panel much easier to use for this use case. Should not break/change existing dashboards with stock panels but external panel plugins can be affected.