Covariant @@
Merge branch 'scalaz-seven' of https://github.com/scalaz/scalaz into scalaz-seven
Added an empty Promise
remove redundant (and commented) instances
Isomorphism example
Merge pull request #315
add sbt-buildinfo
deprecate iterv
tuned
OptionT MonadTell and MonadListen instances
Merge pull request #317 from YoEight/monadtell-instances

OptionT MonadTell and MonadListen instances
bump version to 7.1.0-SNAPSHOT

* Travis [ci skip]
Added IRC build notification.