close potential leak
Don't publish sending mac keys

 * Closes #42

 * The finite-state analysis of the otr v2 spec revealed an attack on
   message integrity. As a result, only mac keys used to receive
   messages can safely be published to allow forgeability of
   transcripts.

 * This change to the spec is seen in,
   http://sourceforge.net/p/otr/libotr/ci/58fd90cb77c836ff9fa762e91d2b2becc6d5aae8/
bump version
constant time int comparison

 * Follows go subtle
   http://golang.org/src/pkg/crypto/subtle/constant_time.go

 /cc @defuse
Add LoquiIM to the wild

 * https://twitter.com/loquiim/status/462553698787684353
Update that
Update some dev deps to placate Travis
Stop testing on node v0.8
Fix broken regexp in test
Callback after disconnect message is sent

 * For issue #56
Split notifications from errors

 * Fixes #45

 * Adds a severity to the error handler.
Document the last two changes
bump version
Merge remote-tracking branch 'upstream/master'