Add versionadded to VoiceClient latency and average_latency

discord/voice_client.py

@@ -214,13 +214,18 @@ class VoiceClient:
 
         This could be referred to as the Discord Voice WebSocket latency and is
         an analogue of user's voice latencies as seen in the Discord client.
+        
+        .. versionadded:: 1.4
         """
         ws = self.ws
         return float("inf") if not ws else ws.latency
 
     @property
     def average_latency(self):
-        """:class:`float`: Average of most recent 20 HEARTBEAT latencies in seconds."""
+        """:class:`float`: Average of most recent 20 HEARTBEAT latencies in seconds.
+        
+        .. versionadded:: 1.4
+        """
         ws = self.ws
         return float("inf") if not ws else ws.average_latency