bring in khatru and eventstore.

eventstore/test/test_helpers.go

@@ -0,0 +1,13 @@
+package test
+
+import (
+	"github.com/nbd-wtf/go-nostr"
+)
+
+func getTimestamps(events []*nostr.Event) []nostr.Timestamp {
+	res := make([]nostr.Timestamp, len(events))
+	for i, evt := range events {
+		res[i] = evt.CreatedAt
+	}
+	return res
+}