* The latest version of Ruby 1.9.3 makes its triumphant return thanks
  to the magic of Ansible's new role dependencies and meta-roles

* Refactored Ruby setup
  * Moved everything into a new ruby-common role that the 2.0 and
    1.9.3 roles require
  * Variables in the 2.0 and 1.9.3 roles modify the behavior of
    ruby-common
  * Tasks and variables were cleaned up and are easier to follow

* Removed functionality that added the deploy user to the sudo group
  * Why tempt developers (or yourself) to do things outside of
    Ansible? :)

* Updated to Passenger 4.0.17