Update to 2.27
    
    - New upstream release 2.27
      - Add the option of passing a hashref to the constructor, where it is
        turned into an object of the class (see POD under new([$config]) for
        details)
      - Move test.conf back into t/, where it was years ago, before someone tried
        to remove all uses of File::Spec; since File::Spec is used often now,
        there is no point in keeping test.conf in the root directory of the distro