***API**: Query database from /api/health endpoint. [#28349](https://github.com/grafana/grafana/pull/28349), [@ceh](https://github.com/ceh)
***Alerting**: Return proper status code when trying to create alert notification channel with duplicate name or uid. [#28043](https://github.com/grafana/grafana/pull/28043), [@jgulick48](https://github.com/jgulick48)
***AlertListPanel**: Add options to sort by Time(asc) and Time(desc). [#29764](https://github.com/grafana/grafana/pull/29764), [@dboslee](https://github.com/dboslee)
***AlertListPanel**: Changed alert url to to go the panel view instead of panel edit. [#29060](https://github.com/grafana/grafana/pull/29060), [@zakiharis](https://github.com/zakiharis)
***Alerting**: Add support for Sensu Go notification channel. [#28012](https://github.com/grafana/grafana/pull/28012), [@nixwiz](https://github.com/nixwiz)
***Annotations**: Remove annotation_tag entries as part of annotations cleanup. [#29534](https://github.com/grafana/grafana/pull/29534), [@dafydd-t](https://github.com/dafydd-t)
***Backend plugins**: Support Forward OAuth Identity for backend data source plugins. [#27055](https://github.com/grafana/grafana/pull/27055), [@billoley](https://github.com/billoley)
***CloudWatch**: Add 'EventBusName' dimension to CloudWatch 'AWS/Events' namespace. [#28402](https://github.com/grafana/grafana/pull/28402), [@tomdaly](https://github.com/tomdaly)
***CloudWatch**: Add support for AWS DirectConnect ConnectionErrorCount metric. [#29583](https://github.com/grafana/grafana/pull/29583), [@haeringer](https://github.com/haeringer)
***CloudWatch**: Add support for AWS/ClientVPN metrics and dimensions. [#29055](https://github.com/grafana/grafana/pull/29055), [@marefr](https://github.com/marefr)
***ColorSchemes**: Adds more color schemes and text colors that depend on the background. [#28305](https://github.com/grafana/grafana/pull/28305), [@torkelo](https://github.com/torkelo)
***CloudWatch**: Added HTTP API Gateway specific metrics and dimensions. [#28780](https://github.com/grafana/grafana/pull/28780), [@karlatkinson](https://github.com/karlatkinson)
***Currency**: Adds Indonesian IDR currency. [#28363](https://github.com/grafana/grafana/pull/28363), [@hiddenrebel](https://github.com/hiddenrebel)
***Data source proxy**: Convert 401 HTTP status code from data source to 400. [#28962](https://github.com/grafana/grafana/pull/28962), [@aknuds1](https://github.com/aknuds1)
***Dashboards**: Delete related data (permissions, stars, tags, versions, annotations) when deleting a dashboard or a folder. [#28826](https://github.com/grafana/grafana/pull/28826), [@AgnesToulet](https://github.com/AgnesToulet)
***Dependencies**: Update angularjs to 1.8.2. [#28736](https://github.com/grafana/grafana/pull/28736), [@torkelo](https://github.com/torkelo)
***Docker**: Use root group in the custom Dockerfile. [#28639](https://github.com/grafana/grafana/pull/28639), [@chugunov](https://github.com/chugunov)
***Elasticsearch**: Add Moving Function Pipeline Aggregation. [#28131](https://github.com/grafana/grafana/pull/28131), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Add Support for Serial Differencing Pipeline Aggregation. [#28618](https://github.com/grafana/grafana/pull/28618), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Interpolate variables in Filters Bucket Aggregation. [#28969](https://github.com/grafana/grafana/pull/28969), [@Elfo404](https://github.com/Elfo404)
***Elasticsearch**: Support extended stats and percentiles in terms order by. [#28910](https://github.com/grafana/grafana/pull/28910), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: View in context feature for logs. [#28764](https://github.com/grafana/grafana/pull/28764), [@simianhacker](https://github.com/simianhacker)
***Explore/Logs**: Update Parsed fields to Detected fields. [#28881](https://github.com/grafana/grafana/pull/28881), [@ivanahuckova](https://github.com/ivanahuckova)
***Explore/Prometheus**: Update default query type option to "Both". [#28935](https://github.com/grafana/grafana/pull/28935), [@ivanahuckova](https://github.com/ivanahuckova)
***Field overrides**: Added matcher to match all fields returned by a specific query. [#28872](https://github.com/grafana/grafana/pull/28872), [@mckn](https://github.com/mckn)
***Instrumentation**: Add histograms for database queries. [#29662](https://github.com/grafana/grafana/pull/29662), [@dafydd-t](https://github.com/dafydd-t)
***LogsPanel**: Don't show scroll bars when not needed. [#28972](https://github.com/grafana/grafana/pull/28972), [@aocenas](https://github.com/aocenas)
***Loki/Explore**: Add query type selector. [#28817](https://github.com/grafana/grafana/pull/28817), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Add query type and line limit to query editor in dashboard. [#29356](https://github.com/grafana/grafana/pull/29356), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Retry web socket connection when connection is closed abnormally. [#29438](https://github.com/grafana/grafana/pull/29438), [@ivanahuckova](https://github.com/ivanahuckova)
***OAuth**: Configurable user name attribute. [#28286](https://github.com/grafana/grafana/pull/28286), [@alexanderzobnin](https://github.com/alexanderzobnin)
***Provisioning**: build paths in an os independent way. [#29143](https://github.com/grafana/grafana/pull/29143), [@amattheisen](https://github.com/amattheisen)
***Prometheus**: Improve autocomplete performance and remove disabling of dynamic label lookup. [#30199](https://github.com/grafana/grafana/pull/30199), [@ivanahuckova](https://github.com/ivanahuckova)
***Prometheus**: Use customQueryParameters for all queries. [#28949](https://github.com/grafana/grafana/pull/28949), [@alexbumbacea](https://github.com/alexbumbacea)
***Security**: Prefer server cipher suites for http2. [#29379](https://github.com/grafana/grafana/pull/29379), [@bergquist](https://github.com/bergquist)
***Security**: Remove insecure cipher suit as default option. [#29378](https://github.com/grafana/grafana/pull/29378), [@bergquist](https://github.com/bergquist)
***StatPanels**: Add new calculation option for percentage difference. [#26369](https://github.com/grafana/grafana/pull/26369), [@jedstar](https://github.com/jedstar)
***TimeSeriesPanel**: The new graph panel now supports y-axis value mapping. [#30272](https://github.com/grafana/grafana/pull/30272), [@torkelo](https://github.com/torkelo)
***Tracing**: Tag spans with user login and datasource name instead of id. [#29183](https://github.com/grafana/grafana/pull/29183), [@bergquist](https://github.com/bergquist)
***Transformations**: Added new transform for excluding and including rows based on their values. [#26884](https://github.com/grafana/grafana/pull/26884), [@Totalus](https://github.com/Totalus)
***Variables**: Add deprecation warning for value group tags. [#30160](https://github.com/grafana/grafana/pull/30160), [@torkelo](https://github.com/torkelo)
***Variables**: Added __user.email to global variable. [#28853](https://github.com/grafana/grafana/pull/28853), [@mckn](https://github.com/mckn)
***Variables**: New Variables are stored immediately. [#29178](https://github.com/grafana/grafana/pull/29178), [@hugohaggmark](https://github.com/hugohaggmark)
### Bug Fixes
### Bug fixes
***API**: Query database from /api/health endpoint. [#28349](https://github.com/grafana/grafana/pull/28349), [@ceh](https://github.com/ceh)
***Alerting**: Return proper status code when trying to create alert notification channel with duplicate name or uid. [#28043](https://github.com/grafana/grafana/pull/28043), [@jgulick48](https://github.com/jgulick48)
***Auth**: Fix default maximum lifetime an authenticated user can be logged in. [#30030](https://github.com/grafana/grafana/pull/30030), [@papagian](https://github.com/papagian)
***Cloudwatch**: Fix issue with field calculation transform not working properly with Cloudwatch data. [#28761](https://github.com/grafana/grafana/pull/28761), [@torkelo](https://github.com/torkelo)
***Dashboards**: Hide playlist edit functionality from viewers and snapshots link from unauthenticated users. [#28992](https://github.com/grafana/grafana/pull/28992), [@jackw](https://github.com/jackw)
***Data source proxy**: Convert 401 HTTP status code from data source to 400. [#28962](https://github.com/grafana/grafana/pull/28962), [@aknuds1](https://github.com/aknuds1)
***Decimals**: Improving auto decimals logic for high numbers and scaled units. [#30262](https://github.com/grafana/grafana/pull/30262), [@torkelo](https://github.com/torkelo)
***Elasticsearch**: Fix date histogram auto interval handling for alert queries. [#30049](https://github.com/grafana/grafana/pull/30049), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Fix index pattern not working with multiple base sections. [#28348](https://github.com/grafana/grafana/pull/28348), [@tomdaly](https://github.com/tomdaly)
***Graph**: Fixes stacking issues like floating bars when data is not aligned. [#29051](https://github.com/grafana/grafana/pull/29051), [@torkelo](https://github.com/torkelo)
***Image uploader**: Fix uploading of images to GCS. [#26493](https://github.com/grafana/grafana/pull/26493), [@gastonqiu](https://github.com/gastonqiu)
***Influx**: Fixes issue with many queries being issued as you type in the variable query field. [#29968](https://github.com/grafana/grafana/pull/29968), [@dprokop](https://github.com/dprokop)
***Loki**: Fix hiding of series in table if labels have number values. [#30185](https://github.com/grafana/grafana/pull/30185), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Lower min step to 1ms. [#30135](https://github.com/grafana/grafana/pull/30135), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Timeseries should not produce 0-values for missing data. [#30116](https://github.com/grafana/grafana/pull/30116), [@davkal](https://github.com/davkal)
***Plugins**: Fix panic when using complex dynamic URLs in app plugin routes. [#27977](https://github.com/grafana/grafana/pull/27977), [@cinaglia](https://github.com/cinaglia)
***Prometheus**: Fix link to Prometheus graph in dashboard. [#29543](https://github.com/grafana/grafana/pull/29543), [@ivanahuckova](https://github.com/ivanahuckova)
***Provisioning**: Build paths in an os independent way. [#29143](https://github.com/grafana/grafana/pull/29143), [@amattheisen](https://github.com/amattheisen)
***Provisioning**: Fixed problem with getting started panel being added to custom home dashboard. [#28750](https://github.com/grafana/grafana/pull/28750), [@torkelo](https://github.com/torkelo)
***SAML**: Fixes bug in processing SAML response with empty <Issuer> element by updating saml library (Enterprise). [#29991](https://github.com/grafana/grafana/pull/29991), [@alexanderzobnin](https://github.com/alexanderzobnin)
***SQL**: Define primary key for tables without it. [#22255](https://github.com/grafana/grafana/pull/22255), [@azhiltsov](https://github.com/azhiltsov)
***Tracing**: Fix issue showing more than 300 spans. [#29377](https://github.com/grafana/grafana/pull/29377), [@zoltanbedi](https://github.com/zoltanbedi)
***Units**: Changes FLOP/s to FLOPS and some other rates per second units get /s suffix. [#28825](https://github.com/grafana/grafana/pull/28825), [@Berbe](https://github.com/Berbe)
***Variables**: Fixes Textbox current value persistence. [#29481](https://github.com/grafana/grafana/pull/29481), [@hugohaggmark](https://github.com/hugohaggmark)
***Variables**: Fixes loading with a custom all value in url. [#28958](https://github.com/grafana/grafana/pull/28958), [@hugohaggmark](https://github.com/hugohaggmark)
***Variables**: Fixes so clicking on Selected in drop down will exclude All value from selection. [#29844](https://github.com/grafana/grafana/pull/29844), [@hugohaggmark](https://github.com/hugohaggmark)
### Breaking changes
The default menu placement for the `Select` component was previously set to `auto`. This meant that the drop down for the select would open downwards/upwards depending on available space. We've noticed that the `auto` doesn't always work when the drop down for `Select` is opened upwards so therefore we've changed the default to `bottom` instead.
In order to minimize the confusion with Constant variable usage, we've removed the ability to make Constant variables visible. This change will also migrate __`all`__ existing __`visible`__ Constant variables to Textbox variables because which we think this is a more appropriate type of variable for this use case.
We have upgraded AngularJS from version 1.6.6 to 1.8.2. Due to this upgrade some old angular plugins might stop working and will require a small update. This is due to the deprecation and removal of pre-assigned bindings. So if your custom angular controllers expect component bindings in the controller constructor you need to move this code to an `$onInit` function. For more details on how to migrate AngularJS code open the [migration guide](https://docs.angularjs.org/guide/migration) and search for **pre-assigning bindings**.
In order not to break all angular panel plugins and data sources we have some custom [angular inject behavior](https://github.com/grafana/grafana/blob/master/public/app/core/injectorMonkeyPatch.ts) that makes sure that bindings for these controllers are still set before constructor is called so many old angular panels and data source plugins will still work. Issue [#28736](https://github.com/grafana/grafana/issues/28736)
### Deprecations
#### Query variable value group tags
This option to group query variable values into groups by tags has been an experimental feature since it was introduced. It was introduced to work around the lack of tags support in time series databases at the time. Now that tags (ie. labels) are the norm there is no longer any great need for this feature. This feature will be removed in Grafana v8 later this year. Issue [#30160](https://github.com/grafana/grafana/issues/30160)
### Plugin development fixes & changes
***Field Config API**: Add ability to hide field option or disable it from the overrides. [#29879](https://github.com/grafana/grafana/pull/29879), [@dprokop](https://github.com/dprokop)
***Select**: Changes default menu placement for Select from auto to bottom. [#29837](https://github.com/grafana/grafana/pull/29837), [@hugohaggmark](https://github.com/hugohaggmark)
***Grafana-ui**: Fix collapsible children sizing. [#29776](https://github.com/grafana/grafana/pull/29776), [@aocenas](https://github.com/aocenas)
***DataSourceWithBackend**: Throw error if health check fails in DataSourceWithBackend. [#29743](https://github.com/grafana/grafana/pull/29743), [@aocenas](https://github.com/aocenas)
***FieldColor**: Handling color changes when switching panel types. [#28875](https://github.com/grafana/grafana/pull/28875), [@dprokop](https://github.com/dprokop)
***CodeEditor**: added support for javascript language. [#28818](https://github.com/grafana/grafana/pull/28818), [@ae3e](https://github.com/ae3e)
***CodeEditor**: Added support for javascript language. [#28818](https://github.com/grafana/grafana/pull/28818), [@ae3e](https://github.com/ae3e)
***grafana/toolkit**: Allow builds with lint warnings. [#28810](https://github.com/grafana/grafana/pull/28810), [@dprokop](https://github.com/dprokop)
***grafana/toolkit**: Drop console and debugger statements by default when building plugin. [#28776](https://github.com/grafana/grafana/pull/28776), [@dprokop](https://github.com/dprokop)
***MutableDataFrame**: Remove unique field name constraint and values field index and unused/seldom used stuff. [#27573](https://github.com/grafana/grafana/pull/27573), [@torkelo](https://github.com/torkelo)
<!-- Auto generated by update changelog github action -->
# Release notes for Grafana 7.4.0
### Features and enhancements
***AlertListPanel**: Add options to sort by Time(asc) and Time(desc). [#29764](https://github.com/grafana/grafana/pull/29764), [@dboslee](https://github.com/dboslee)
***AlertListPanel**: Changed alert url to to go the panel view instead of panel edit. [#29060](https://github.com/grafana/grafana/pull/29060), [@zakiharis](https://github.com/zakiharis)
***Alerting**: Add support for Sensu Go notification channel. [#28012](https://github.com/grafana/grafana/pull/28012), [@nixwiz](https://github.com/nixwiz)
***Annotations**: Remove annotation_tag entries as part of annotations cleanup. [#29534](https://github.com/grafana/grafana/pull/29534), [@dafydd-t](https://github.com/dafydd-t)
***Backend plugins**: Support Forward OAuth Identity for backend data source plugins. [#27055](https://github.com/grafana/grafana/pull/27055), [@billoley](https://github.com/billoley)
***CloudWatch**: Add 'EventBusName' dimension to CloudWatch 'AWS/Events' namespace. [#28402](https://github.com/grafana/grafana/pull/28402), [@tomdaly](https://github.com/tomdaly)
***CloudWatch**: Add support for AWS DirectConnect ConnectionErrorCount metric. [#29583](https://github.com/grafana/grafana/pull/29583), [@haeringer](https://github.com/haeringer)
***CloudWatch**: Add support for AWS/ClientVPN metrics and dimensions. [#29055](https://github.com/grafana/grafana/pull/29055), [@marefr](https://github.com/marefr)
***CloudWatch**: Added HTTP API Gateway specific metrics and dimensions. [#28780](https://github.com/grafana/grafana/pull/28780), [@karlatkinson](https://github.com/karlatkinson)
***Currency**: Adds Indonesian IDR currency. [#28363](https://github.com/grafana/grafana/pull/28363), [@hiddenrebel](https://github.com/hiddenrebel)
***Dashboards**: Delete related data (permissions, stars, tags, versions, annotations) when deleting a dashboard or a folder. [#28826](https://github.com/grafana/grafana/pull/28826), [@AgnesToulet](https://github.com/AgnesToulet)
***Dependencies**: Update angularjs to 1.8.2. [#28736](https://github.com/grafana/grafana/pull/28736), [@torkelo](https://github.com/torkelo)
***Docker**: Use root group in the custom Dockerfile. [#28639](https://github.com/grafana/grafana/pull/28639), [@chugunov](https://github.com/chugunov)
***Elasticsearch**: Add Moving Function Pipeline Aggregation. [#28131](https://github.com/grafana/grafana/pull/28131), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Add Support for Serial Differencing Pipeline Aggregation. [#28618](https://github.com/grafana/grafana/pull/28618), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Interpolate variables in Filters Bucket Aggregation. [#28969](https://github.com/grafana/grafana/pull/28969), [@Elfo404](https://github.com/Elfo404)
***Elasticsearch**: Support extended stats and percentiles in terms order by. [#28910](https://github.com/grafana/grafana/pull/28910), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: View in context feature for logs. [#28764](https://github.com/grafana/grafana/pull/28764), [@simianhacker](https://github.com/simianhacker)
***Explore/Logs**: Update Parsed fields to Detected fields. [#28881](https://github.com/grafana/grafana/pull/28881), [@ivanahuckova](https://github.com/ivanahuckova)
***Explore/Prometheus**: Update default query type option to "Both". [#28935](https://github.com/grafana/grafana/pull/28935), [@ivanahuckova](https://github.com/ivanahuckova)
***Field overrides**: Added matcher to match all fields returned by a specific query. [#28872](https://github.com/grafana/grafana/pull/28872), [@mckn](https://github.com/mckn)
***Instrumentation**: Add histograms for database queries. [#29662](https://github.com/grafana/grafana/pull/29662), [@dafydd-t](https://github.com/dafydd-t)
***LogsPanel**: Don't show scroll bars when not needed. [#28972](https://github.com/grafana/grafana/pull/28972), [@aocenas](https://github.com/aocenas)
***Loki/Explore**: Add query type selector. [#28817](https://github.com/grafana/grafana/pull/28817), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Add query type and line limit to query editor in dashboard. [#29356](https://github.com/grafana/grafana/pull/29356), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Retry web socket connection when connection is closed abnormally. [#29438](https://github.com/grafana/grafana/pull/29438), [@ivanahuckova](https://github.com/ivanahuckova)
***OAuth**: Configurable user name attribute. [#28286](https://github.com/grafana/grafana/pull/28286), [@alexanderzobnin](https://github.com/alexanderzobnin)
***Prometheus**: Improve autocomplete performance and remove disabling of dynamic label lookup. [#30199](https://github.com/grafana/grafana/pull/30199), [@ivanahuckova](https://github.com/ivanahuckova)
***Prometheus**: Use customQueryParameters for all queries. [#28949](https://github.com/grafana/grafana/pull/28949), [@alexbumbacea](https://github.com/alexbumbacea)
***Security**: Prefer server cipher suites for http2. [#29379](https://github.com/grafana/grafana/pull/29379), [@bergquist](https://github.com/bergquist)
***Security**: Remove insecure cipher suit as default option. [#29378](https://github.com/grafana/grafana/pull/29378), [@bergquist](https://github.com/bergquist)
***StatPanels**: Add new calculation option for percentage difference. [#26369](https://github.com/grafana/grafana/pull/26369), [@jedstar](https://github.com/jedstar)
***TimeSeriesPanel**: The new graph panel now supports y-axis value mapping. [#30272](https://github.com/grafana/grafana/pull/30272), [@torkelo](https://github.com/torkelo)
***Tracing**: Tag spans with user login and datasource name instead of id. [#29183](https://github.com/grafana/grafana/pull/29183), [@bergquist](https://github.com/bergquist)
***Transformations**: Added new transform for excluding and including rows based on their values. [#26884](https://github.com/grafana/grafana/pull/26884), [@Totalus](https://github.com/Totalus)
***Variables**: Add deprecation warning for value group tags. [#30160](https://github.com/grafana/grafana/pull/30160), [@torkelo](https://github.com/torkelo)
***Variables**: Added __user.email to global variable. [#28853](https://github.com/grafana/grafana/pull/28853), [@mckn](https://github.com/mckn)
***Variables**: New Variables are stored immediately. [#29178](https://github.com/grafana/grafana/pull/29178), [@hugohaggmark](https://github.com/hugohaggmark)
### Bug fixes
***API**: Query database from /api/health endpoint. [#28349](https://github.com/grafana/grafana/pull/28349), [@ceh](https://github.com/ceh)
***Alerting**: Return proper status code when trying to create alert notification channel with duplicate name or uid. [#28043](https://github.com/grafana/grafana/pull/28043), [@jgulick48](https://github.com/jgulick48)
***Auth**: Fix default maximum lifetime an authenticated user can be logged in. [#30030](https://github.com/grafana/grafana/pull/30030), [@papagian](https://github.com/papagian)
***Cloudwatch**: Fix issue with field calculation transform not working properly with Cloudwatch data. [#28761](https://github.com/grafana/grafana/pull/28761), [@torkelo](https://github.com/torkelo)
***Dashboards**: Hide playlist edit functionality from viewers and snapshots link from unauthenticated users. [#28992](https://github.com/grafana/grafana/pull/28992), [@jackw](https://github.com/jackw)
***Data source proxy**: Convert 401 HTTP status code from data source to 400. [#28962](https://github.com/grafana/grafana/pull/28962), [@aknuds1](https://github.com/aknuds1)
***Decimals**: Improving auto decimals logic for high numbers and scaled units. [#30262](https://github.com/grafana/grafana/pull/30262), [@torkelo](https://github.com/torkelo)
***Elasticsearch**: Fix date histogram auto interval handling for alert queries. [#30049](https://github.com/grafana/grafana/pull/30049), [@simianhacker](https://github.com/simianhacker)
***Elasticsearch**: Fix index pattern not working with multiple base sections. [#28348](https://github.com/grafana/grafana/pull/28348), [@tomdaly](https://github.com/tomdaly)
***Graph**: Fixes stacking issues like floating bars when data is not aligned. [#29051](https://github.com/grafana/grafana/pull/29051), [@torkelo](https://github.com/torkelo)
***Image uploader**: Fix uploading of images to GCS. [#26493](https://github.com/grafana/grafana/pull/26493), [@gastonqiu](https://github.com/gastonqiu)
***Influx**: Fixes issue with many queries being issued as you type in the variable query field. [#29968](https://github.com/grafana/grafana/pull/29968), [@dprokop](https://github.com/dprokop)
***Loki**: Fix hiding of series in table if labels have number values. [#30185](https://github.com/grafana/grafana/pull/30185), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Lower min step to 1ms. [#30135](https://github.com/grafana/grafana/pull/30135), [@ivanahuckova](https://github.com/ivanahuckova)
***Loki**: Timeseries should not produce 0-values for missing data. [#30116](https://github.com/grafana/grafana/pull/30116), [@davkal](https://github.com/davkal)
***Plugins**: Fix panic when using complex dynamic URLs in app plugin routes. [#27977](https://github.com/grafana/grafana/pull/27977), [@cinaglia](https://github.com/cinaglia)
***Prometheus**: Fix link to Prometheus graph in dashboard. [#29543](https://github.com/grafana/grafana/pull/29543), [@ivanahuckova](https://github.com/ivanahuckova)
***Provisioning**: Build paths in an os independent way. [#29143](https://github.com/grafana/grafana/pull/29143), [@amattheisen](https://github.com/amattheisen)
***Provisioning**: Fixed problem with getting started panel being added to custom home dashboard. [#28750](https://github.com/grafana/grafana/pull/28750), [@torkelo](https://github.com/torkelo)
***SAML**: Fixes bug in processing SAML response with empty <Issuer> element by updating saml library (Enterprise). [#29991](https://github.com/grafana/grafana/pull/29991), [@alexanderzobnin](https://github.com/alexanderzobnin)
***SQL**: Define primary key for tables without it. [#22255](https://github.com/grafana/grafana/pull/22255), [@azhiltsov](https://github.com/azhiltsov)
***Tracing**: Fix issue showing more than 300 spans. [#29377](https://github.com/grafana/grafana/pull/29377), [@zoltanbedi](https://github.com/zoltanbedi)
***Units**: Changes FLOP/s to FLOPS and some other rates per second units get /s suffix. [#28825](https://github.com/grafana/grafana/pull/28825), [@Berbe](https://github.com/Berbe)
***Variables**: Fixes Textbox current value persistence. [#29481](https://github.com/grafana/grafana/pull/29481), [@hugohaggmark](https://github.com/hugohaggmark)
***Variables**: Fixes loading with a custom all value in url. [#28958](https://github.com/grafana/grafana/pull/28958), [@hugohaggmark](https://github.com/hugohaggmark)
***Variables**: Fixes so clicking on Selected in drop down will exclude All value from selection. [#29844](https://github.com/grafana/grafana/pull/29844), [@hugohaggmark](https://github.com/hugohaggmark)
### Breaking changes
The default menu placement for the `Select` component was previously set to `auto`. This meant that the drop down for the select would open downwards/upwards depending on available space. We've noticed that the `auto` doesn't always work when the drop down for `Select` is opened upwards so therefore we've changed the default to `bottom` instead.
In order to minimize the confusion with Constant variable usage, we've removed the ability to make Constant variables visible. This change will also migrate __`all`__ existing __`visible`__ Constant variables to Textbox variables because which we think this is a more appropriate type of variable for this use case.
We have upgraded AngularJS from version 1.6.6 to 1.8.2. Due to this upgrade some old angular plugins might stop working and will require a small update. This is due to the deprecation and removal of pre-assigned bindings. So if your custom angular controllers expect component bindings in the controller constructor you need to move this code to an `$onInit` function. For more details on how to migrate AngularJS code open the [migration guide](https://docs.angularjs.org/guide/migration) and search for **pre-assigning bindings**.
In order not to break all angular panel plugins and data sources we have some custom [angular inject behavior](https://github.com/grafana/grafana/blob/master/public/app/core/injectorMonkeyPatch.ts) that makes sure that bindings for these controllers are still set before constructor is called so many old angular panels and data source plugins will still work. Issue [#28736](https://github.com/grafana/grafana/issues/28736)
### Deprecations
#### Query variable value group tags
This option to group query variable values into groups by tags has been an experimental feature since it was introduced. It was introduced to work around the lack of tags support in time series databases at the time. Now that tags (ie. labels) are the norm there is no longer any great need for this feature. This feature will be removed in Grafana v8 later this year. Issue [#30160](https://github.com/grafana/grafana/issues/30160)
### Plugin development fixes & changes
***Field Config API**: Add ability to hide field option or disable it from the overrides. [#29879](https://github.com/grafana/grafana/pull/29879), [@dprokop](https://github.com/dprokop)
***Select**: Changes default menu placement for Select from auto to bottom. [#29837](https://github.com/grafana/grafana/pull/29837), [@hugohaggmark](https://github.com/hugohaggmark)
***Grafana-ui**: Fix collapsible children sizing. [#29776](https://github.com/grafana/grafana/pull/29776), [@aocenas](https://github.com/aocenas)
***DataSourceWithBackend**: Throw error if health check fails in DataSourceWithBackend. [#29743](https://github.com/grafana/grafana/pull/29743), [@aocenas](https://github.com/aocenas)
***FieldColor**: Handling color changes when switching panel types. [#28875](https://github.com/grafana/grafana/pull/28875), [@dprokop](https://github.com/dprokop)
***CodeEditor**: Added support for javascript language. [#28818](https://github.com/grafana/grafana/pull/28818), [@ae3e](https://github.com/ae3e)
***grafana/toolkit**: Allow builds with lint warnings. [#28810](https://github.com/grafana/grafana/pull/28810), [@dprokop](https://github.com/dprokop)
***grafana/toolkit**: Drop console and debugger statements by default when building plugin. [#28776](https://github.com/grafana/grafana/pull/28776), [@dprokop](https://github.com/dprokop)
***MutableDataFrame**: Remove unique field name constraint and values field index and unused/seldom used stuff. [#27573](https://github.com/grafana/grafana/pull/27573), [@torkelo](https://github.com/torkelo)
