[SVN] bump to version 0.2.1

[UPD] roster exchange (XEP-0144) now is not mandatory since not all clients supports it; it is optional and configurable

xmpp_tg/mtproto.py

@@ -427,9 +427,7 @@ class TelegramGateClient(TelegramClient):
 
         # group converted to supergroup
         elif type(message.action) in [MessageActionChatMigrateTo, MessageActionChannelMigrateFrom]:
-            print('--ACHTUNG!--')
-            print(message)
-            #del(self.xmpp_gate.tg_dialogs[self.jid]['groups'][message.chat_id])
+            pass
 
         return msg