merge gajim plugin with hg.gajim.org/gajim-plugins repo
gotr: fix message encoding in gajim envents
Merge pull request #34 from mathieui/master

Fix the build with python 3
drop unused slot
get rid of useless slots
Merge pull request #36 from afflux/fix-unencrypted-msgs

gotr: fix message encoding in gajim events
Merge branch 'master' of github.com:afflux/pure-python-otr
gotr: push version
gotr: add some more debugging information for outgoing messages
potr.Error expects utf8 byte string (fixes #38)