annouce XEP-0380 support

gajim/common/app.py

@@ -259,7 +259,8 @@ gajim_common_features = [nbxmpp.NS_BYTESTREAM, nbxmpp.NS_SI, nbxmpp.NS_FILE,
     nbxmpp.NS_SSN, nbxmpp.NS_MOOD, nbxmpp.NS_ACTIVITY, nbxmpp.NS_NICK,
     nbxmpp.NS_ROSTERX, nbxmpp.NS_SECLABEL, nbxmpp.NS_HASHES_2,
     nbxmpp.NS_HASHES_MD5, nbxmpp.NS_HASHES_SHA1, nbxmpp.NS_HASHES_SHA256,
-    nbxmpp.NS_HASHES_SHA512, nbxmpp.NS_CONFERENCE, nbxmpp.NS_CORRECT]
+    nbxmpp.NS_HASHES_SHA512, nbxmpp.NS_CONFERENCE, nbxmpp.NS_CORRECT,
+    nbxmpp.NS_EME]
 
 # Optional features gajim supports per account
 gajim_optional_features = {}