v8.6.4

What's Changed

• Use GitHub teams for role lookup by @satterly in #1625
• Optionally print warnings if db create fails by @satterly in #1627
• special handling of sorting by custom attributes by @satterly in #1628
• Customer lookup failed when no user email by @satterly in #1629
• Test for duplicate alerts received after blackout period expires by @satterly in #1630

Full Changelog: v8.6.3...v8.6.4