Swap to SleekXMPP-FS, a fork built specifically for sucks

This fork of SleekXMPP disables certificate validation to work around #62 and #45

This fix should be seen as a temporary hack until we figure out a long term solution.

sucks/__init__.py

@@ -7,9 +7,9 @@ from threading import Event
 
 import requests
 import stringcase
-from sleekxmpp import ClientXMPP, Callback, MatchXPath
-from sleekxmpp.xmlstream import ET
-from sleekxmpp.exceptions import XMPPError
+from sleekxmppfs import ClientXMPP, Callback, MatchXPath
+from sleekxmppfs.xmlstream import ET
+from sleekxmppfs.exceptions import XMPPError
 
 _LOGGER = logging.getLogger(__name__)