Remove version gem dependency

[rymai]

Hi Michael,

I have conflicts in our Rails app between the paper_trail gem and the version gem since both declare a Version class and the version gem overwrite the []= method... But since the version gem can be replaced by RubyGem's methods, I thought it would the opportunity to solve my issues and to remove a not-so-useful dependency.

What do you think, do you see any downside (for instance the dependency on RubyGem)?

[netzpirat]

You're the best! That was exactly the next item on my to-do list. I put it on the list after I saw how you solved the same problem in guard-rspec. Thanks a lot!