Cabal revisions of deferred-folds-0.6

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

   deferred-folds version:   0.6+x-revision: 1 category:   Folding synopsis:   other-modules:     DeferredFolds.Prelude   build-depends:-    base >=4.7 && <5,+    base >=4.9 && <5,     containers >=0.5 && <0.6,     foldl >=1 && <2