Cabal revisions of extensible-0.6

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

 name:                extensible version:             0.6+x-revision: 1 synopsis:            Extensible, efficient, optics-friendly data types and effects homepage:            https://github.com/fumieval/extensible bug-reports:         http://github.com/fumieval/extensible/issues   location: https://github.com/fumieval/extensible.git  library+  build-depends: aeson <1.6+   exposed-modules:     Data.Extensible     Data.Extensible.Bits