This fixes an issue, where clients may think none is typing, because a different event type arrived

Yes, I made a mess. I should read more carefully, when I resolve
conflicts... .-.

This is needed for openssl 1.1. Sadly this breaks json_fwd.hpp
detection, so it was removed (for now at least).

Adds function to set presence explicitly, query presence explicitly and
to set presence explicitly on sync as well as receive presence updates.