Backlog
=======

Prove postulates in `Cat.Wishlist`
`ntypeCommulative` might be there as well.

Prove that the opposite category is a category.

Prove univalence for the category of
  * sets
  * functors and natural transformations

Prove:
  * `isProp (Product ...)`
  * `isProp (HasProducts ...)`

* Functor ✓
* Applicative Functor ✗
  * Lax monoidal functor ✗
    * Monoidal functor ✗
  * Tensorial strength ✗
* Category ✓
  * Monoidal category ✗
* Monad
  * Monoidal monad ✓
  * Kleisli monad ✓
  * Problem 2.3 in voe
    * 1st contruction ~ monoidal ✓
    * 2nd contruction ~ klesli ✓
      * 1st ≃ 2nd ✗