Complete Iq request callbacks for group protocol.
Complete Iq request callbacks for group protocol.

The group protocol layer appears to be the only remaining layer that
does not call `toUpper()` with an entity for every incoming iq request
node. This will cause two bad things to happen:

  1. Interface clients will not get callbacks for these incomplete Iq
     request sequences.
  2. Any attempts to use registered callbacks with these incomplete Iq
     request sequences will be leaked.

There's still a much larger memory management issue in Yowsup, assuming
that I'm correct that there's no periodic sweeping of unanswered
registry callbacks. I've reported more about that in Issue 1263
(https://github.com/tgalal/yowsup/issues/1263).

ongair/yowsup