This package provides first class functional references in Van Laarhoven
style supporting the following optics:

* Lenses (view, over)
* Traversals (toListOf, matching, over)
* Setters (over)
* Grates (zipWithOf, under, review)
* Resetters (under)
* Adapters (view, review)
* Grids (toListOf, over / under, review)
* Prisms (matching, over / under, review)
* Getters (view)
* Folders (toListOf)
* Reviewers (review)