Move traverseS_ to Foldable (alongside traverse_) and add syntax
Move sequenceS_ to Foldable
Merge pull request #290 from bmjames/state

Move traverseS_ to Foldable
Fix EitherT.||| infinite recursion
Merge pull request #291 from wemrysi/eitherT-orElse-loop

Fix EitherT.||| infinite recursion