X proto += .id_timestamp

See 9385706f (Fix identification issues, including a race condition
causing id conflicts).

t/NOTES

@@ -56,6 +56,9 @@ TID
 
 POID = PTID
 
+Float
+	.value	float64	// '\xff' * 8 if None
+
 
 ~~~~~~~~
 
@@ -64,6 +67,7 @@ NodeList []
 	address		Address
 	uuid		UUID
 	state		NodeState
+	id_timestamp	Float
 
 CellList []
 	uuid	UUID
@@ -108,6 +112,7 @@ RequestIdentification
 	.uuid			UUID
 	.address		Address
 	.name			String
+	.id_timestamp		Float
 
 TODO