Monal OS X with Client state and initial Mam

There is a new version of the OS X beta with a complete implementation for XEP-0352: Client State Indication and an initial implementation of  XEP-0313: Message Archive Management . I know some issues with MAM that I will fix, in particular:

1. last message received is duplicated
2. time stamps on delayed messages are not the originals but when they arrived
3. only retrieves the default number of messages from the server/ doesn’t handle paging yet.

If you see anything else, let me know.