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Add new Redshift metrics and dimensions for Cloudwatch datasource

 AWS/Redshift has new dimensions (`latency`, `service class`, `wmlid`) and metrics (`QueriesCompletedPerSecond`, `QueryRuntimeBreakdown`, `QueryDuration`,  `WLMQueriesCompletedPerSecond`, `WLMQueryDuration`, `WLMQueueLength`) in Cloudwatch: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/rs-metricscollected.html

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* Improve iOS homescreen icon

* Improve Windows10 tile experience

* Remove unused favicon

* add series override option to hide tooltip

* fix test

* invert option

* fix test

* remove initialization

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fix custom variable quoting in sql* query interpolations

Karma to Jest: prometheus datasource

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Added BurstBalance metric to list of AWS RDS metrics.

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add AWS/DX metrics and dimension to cloudwatch

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Adding Cloudwatch AWS/AppSync metrics and dimensions

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change units to include characters for power of 2 and 3

Use metric column as prefix when returning multiple value columns

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