Update monal.yml

Monal has added OMEMO support to their current beta. Seems it is just a question of time it has full support.

Author: Echolon

_data/clients/monal.yml

@@ -2,3 +2,7 @@ name: Monal
 url: https://monal.im/
 tracking_issue: https://github.com/anurodhp/Monal/issues/9
 bountysource: 30757290
+work_in_progress: yes
+testing: yes
+done: no
+status: 80