Log Message:
Update to 0.60. From the changelog:

- Added flag to make `pherkin` check for duplicate matching step
  functions to help debugging
- Added option to specify meta data to step functions and use it in
  extensions; minimally available meta data identifies the file name
  and line where the step function has been defined
- Cleaned up release procedure: 0.58 and 0.59 were sloppy, including
  additional files from the working directory
- Increase minimum Perl version to 5.10
- Updated languge support from Cucumber upstream repository, adding
  support for: Armenian, Aragonese, Asturian, Azerbaijani, Bosnian,
  Emoji, Irish, Gujarati, Georgian, Macedonian (Cyrilic),
  Macedonian (Latin), Mongolian and Tamil
- Documentation updates and (hopefully) clarification