Log Message:
Update to 4.0.3

CHANGELOG:
4.0.3
* Fixed random segfaulting when using `foldMapBy`.

4.0.2
* Properly bundled the modules needed for the properties test suite into
  the tarball for hackage.

4.0.1
* Typo fixes
* Exporting `Rewrapping` from `Control.Lens.Wrapped`.
* Removed the dependency on `cpphs`.