v2.8.3 - Dashboard Meters & Alerts Updates

What's Changed

• Added "Net Grid Usage" meter by @wreiske and "% Solar Powered" meter by @jasonacox in #179
• Dashboard archived and versioned in ./dashboards by @jasonacox in #181
• Added alerts CQ to copy data from "raw" 3 day retention policy to an "alerts" infinite (INF) retention policy by @mcbirse in #182

Full Changelog: v2.8.2...v2.8.3