Cabal revisions of semigroups-0.18.5

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

 name:          semigroups category:      Algebra, Data, Data Structures, Math version:       0.18.5+x-revision: 1 license:       BSD3 cabal-version: >= 1.10 license-file:  LICENSE       build-depends: text >= 0.10 && < 2      if flag(hashable)-      build-depends: hashable >= 1.1  && < 1.3+      build-depends: hashable >= 1.1.1.0  && < 1.3      if flag(hashable) && flag(unordered-containers)       build-depends: unordered-containers >= 0.2  && < 0.3