Add multi-prefix capability

irclog.py

@@ -321,7 +321,7 @@ class IRCClientProtocol(asyncio.Protocol):
 		self.logger.info('IRC connected')
 		self.transport = transport
 		self.connected = True
-		caps = [b'userhost-in-names', b'away-notify', b'account-notify', b'extended-join']
+		caps = [b'multi-prefix', b'userhost-in-names', b'away-notify', b'account-notify', b'extended-join']
 		if self.sasl:
 			caps.append(b'sasl')
 		for cap in caps: