Log Message:
Update to mmorph-1.1.5

1.1.5
* Fix build failures on GHC 8.4 and 8.6
* Add support for safe Haskell
  - Specifically, this marks the Control.Monad.Trans.Compose module as
    Trustworthy
  - The change in 1.1.4 to use GeneralizedNewtypeDeriving meant that
    the Control.Monad.Trans.Compose module was no longer inferred as
    safe
* Restore Traversable instance removed by mistake in 1.1.4

1.1.4 (Blacklisted)
* Unintentional removal of Traversable instance for ComposeT
  - This missing instance is restored in 1.1.5
  - This is the reason why the 1.1.4 release is blacklisted

* Fix MonadFail-related code to work for GHCJS
* The MonadRWS instance for ComposeT has a more flexible constraint
  - The constraint is now MonadReader r (f (g m)), MonadWriter w (f (g
    m)), MonadState s (f (g m)) instead of MonadRWS r w s (f g m)
  - This loosening of the constraint is backwards-compatible