Cabal revisions of hdocs-0.5.3.0

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

 name:                hdocs
 version:             0.5.3.0
+x-revision: 1
 synopsis:            Haskell docs tool
 description:
   Tool and library to get docs for installed packages and source files.
   hs-source-dirs: tools
   ghc-options: -fno-warn-tabs
   build-depends:
-    base >= 4.7 && < 5,
+    base >= 4.9 && < 5,
     hdocs,
     aeson >= 0.7.0,
     aeson-pretty >= 0.7.0,