Cabal revisions of category-extras-0.50.3

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:                   category-extras category:               Control, Monads, Comonads version:                0.50.3+x-revision: 1 license:                BSD3 cabal-version:          >= 1.2 license-file:           LICENSE }  library { -        build-depends:  base > 3, mtl, array+        build-depends:  base > 3 && < 4.3, mtl, array         extensions:                 CPP,                 EmptyDataDecls,