SafeCopy is an extension to cereal, a Haskell serialization library:
 it adds the ability to define new versions of some data tpe and
 automatically convert variables serialized with an old format to a
 newer one.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.