Log Message:
Update to profunctors-5.6.2

5.6.2 [2021.02.17]
* Add Semigroup and Monoid instances for Forget

5.6.1 [2020.12.31]
* Add Functor instances for PastroSum, CopastroSum, Environment,
  FreeMapping, Pastro, Copastro, FreeTraversing, and Coyoneda.
* Explicitly mark modules as Safe.

5.6 [2020.10.01]
* Enable the PolyKinds extension. The following datatypes now have
  polymorphic kinds: (:->), Cayley, Procompose, Rift,
  ProfunctorFunctor, Ran, Codensity, Prep, Coprep, Star, Costar,
  WrappedArrow, Forget.
* Allow building with GHC 9.0.

5.5.2 [2020.02.13]
* Add Cochoice, Costrong, Closed, Traversing, and Mapping instances
  for Cayley.
* Add Mapping and Traversing instances for Tannen.