Add 'is' in new module Control.Lens.Extras
Add example to Data.List.Split.chunking
Merge pull request #328 from nandykins/master

Add Control.Lens.Extras + chunking documentation
Generalized `failing` so that it now subsumes `ifailing`. Removed `ifailing` and switched to using the `Traversing` type alias in more places.
Remove ifailing from exports
generalize failover
Added ifailover
Added mock failover and ifailover signatures
Try forcing installed HLint on travis
Fixed type error that caused issues on GHC 7.4
Added 'un'
Merge branch 'master' of github.com:ekmett/lens
Merge https://github.com/ekmett/lens
Add Control.Lens.Fold.noneOf as negation of anyOf