Cabal revisions of machines-0.2.3

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

 name:          machines category:      Control, Enumerator version:       0.2.3+x-revision: 1 license:       BSD3 cabal-version: >= 1.10 license-file:  LICENSE  library   build-depends:-    base         == 4.*,+    base >= 4.5 && < 5,     comonad      >= 3,     containers   >= 0.3 && < 0.6,     free         >= 3.1.1,   main-is: doctests.hs   default-language: Haskell2010   build-depends:-    base == 4.*,+    base >= 4.5 && < 5,     directory >= 1.0 && < 1.3,     doctest >= 0.8 && <= 0.10,     filepath >= 1.3 && < 1.4