norman/friendly_id — pull request #289 by raymccoy (2012-05-25 23:25:10+00:00)
Title: Allow use of single dashes as sequence separator

I don't really like having to use double dashes to separate sequences. It's not easy to remember. With this, you can use single dash as sequence separator even if the slug contains numbers.

I believe a single dash should also be de default configuration for the sequence separator, but I will leave that for you to decide :)