Update 2019-06-06.md

Author: leebyron

agendas/2019-06-06.md

@@ -67,4 +67,6 @@ Yash Handa           | Individual Contrib | Delhi, IN
 1. Tracking actionable items after each WG (Ivan) (10m)
 1. GraphQL.org Q&A & Call for Maintainers (5m)
 1. GraphQL FAQ (Ivan) (15m)
+1. Interface inheritance (Michael) (5m)
+1. @oneField (Benjie) (5m)
 1. *ADD YOUR AGENDA ITEM ABOVE HERE*