Cabal revisions of MonadCatchIO-mtl-0.3.0.4

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

 name:                MonadCatchIO-mtl version:             0.3.0.4+x-revision: 1 description:         Provides a monad-transformer version of the @Control.Exception.catch@         function. For this, it defines the @MonadCatchIO@ class, a subset of tested-with:        GHC==6.10  Library-  build-depends:    base < 5, mtl, extensible-exceptions+  build-depends:    base < 4.7, mtl, extensible-exceptions   ghc-options:      -Wall   extensions:       ExistentialQuantification,                     ScopedTypeVariables