[SVN] initial commit after SVN rebirth;

[SVN] bump to version 2.0
[UPD] now transport working with telethon 0.15.5 and sleekxmpp 1.3.2
[FIX] fixed everlasting authorization requests. if you got deauth message — ignore it, FROM subscription is enough.
[ADD] implemented roster exchange via XEP-0144
[ADD] we will send authorization request when unknown contact sent us a message
[ADD] correct presence handling for transport and users
[ADD] fixed presence spam (by default, we updating presence once for 60 seconds -- look at `status_update_interval` in mtproto.py)
[ADD] we will automatically connect to all actual sessions after transport start

xmpp_tg/monkey.py

@@ -0,0 +1,22 @@
+from sleekxmpp.plugins.xep_0054 import XEP_0054
+from sleekxmpp import Iq
+from sleekxmpp.exceptions import XMPPError
+
+
+def patched_handle_get_vcard(self, iq):
+    if iq['type'] == 'result':
+        self.api['set_vcard'](jid=iq['from'], args=iq['vcard_temp'])
+        return
+    elif iq['type'] == 'get':
+        vcard = self.api['get_vcard'](iq['to'].bare)
+        if isinstance(vcard, Iq):
+            vcard.send()
+        else:
+            iq = iq.reply()
+            iq.append(vcard)
+            iq.send()
+    elif iq['type'] == 'set':
+        raise XMPPError('service-unavailable')
+
+# Грязно патчим баг в библиотеке
+XEP_0054._handle_get_vcard = patched_handle_get_vcard