Alpha 2 - "Burgodunum"

Upgrade instructions are available here.

• Refined UI
• Add new rule types Flatline, Metric Aggregation (average, sum, min, max)
• Add support for unix timestamps (seconds or milliseconds)
• Add customizable time field instead of assuming @timestamp
• Add Base Rule feature for server-side defaults (settings like slack webhook url or smtp server)
• Add ability to select time frame for test
• Add nested fields to filter dropdown
• Support query_key (group over) in chart, each group becomes tab below chart
• Many bug fixes