bogn/mm-sluggable — pull request #6 by codegourmet (2013-10-18 13:54:12+00:00)
Title: history and method options

- history option: slugs can have a history
- old versions are re-used
- slugs are unique over all versions
- newest version is default

- method proc option: slug method can be a Proc
- proc is called with the record and the to_slug value as params

+ specs for both.