Cabal revisions of hspec-contrib-0.5.0

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

 name:             hspec-contrib version:          0.5.0+x-revision: 1 license:          MIT license-file:     LICENSE copyright:        (c) 2011-2017 Simon Hengel,       -Wall   build-depends:       base == 4.*-    , hspec-core+    , hspec-core < 2.10     , HUnit      , hspec-contrib