Gajim 1.9.0 or Gajim master has implemented this new version, if you want to test against a client.
This was partially implemented in https://hg.prosody.im/prosody-modules/rev/bcad6baa4fc3 thanks to nicoco
Gajim 1.9.0 or Gajim master has implemented this new version, if you want to test against a client.
This was partially implemented in https://hg.prosody.im/prosody-modules/rev/bcad6baa4fc3 thanks to nicoco