Grafana 1.6.0 released.

Grafana version 1.6.0 has been released, featuring significant enhancements and new functionalities aimed at improving user experience and expanding data source compatibility. This update introduces initial support for OpenTSDB as a metrics datasource, alongside notable dashboard editing improvements, such as easier panel manipulation and row setting adjustments. The InfluxDB query editor has been refined for better space efficiency, and users can now utilize the "group by" feature to transform a single InfluxDB series into multiple Grafana series, as well as employ filtering with templated queries. Additionally, the "graphite" panel has been renamed to "graph" to streamline the interface, while ensuring that existing dashboards remain functional. For a detailed list of changes, users are encouraged to review the complete changelog available on the download page.