Cabal revisions of lens-family-2.1.0

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

 name:               lens-family category:           Data, Lenses version:            2.1.0+x-revision: 1 license:            BSD3 cabal-version:      >= 1.6 license-file:       LICENSE   location: https://hub.darcs.net/roconnor/lens-family  library+  build-depends: base <4.15+   extensions:       Rank2Types   build-depends:     base                 >= 4.11    && < 5,