Cabal revisions of hreader-0.2.0

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

 name:                hreader version:             0.2.0+x-revision: 1 synopsis:            Generalization of MonadReader and ReaderT license:             BSD3 license-file:        LICENSE                     , TypeFamilies                     , UndecidableInstances -  build-depends:       base  >= 4.7   && < 5+  build-depends:       base  >= 4.8   && < 5                      , exceptions                      , hset  >= 1.1.0 && < 2.0.0                      , mmorph