Upgraded nokogiri to version 1.6.0.
Removed the require for ActionView helpers and updated README.rdoc to reflect this. Required the helpers in the test helper, so the tests pass.
Added more robust allowed protocol checking via a PROTOCOL_SEPARATOR constant in whitelist.rb.
Inverted return value of include? check.
Removed RR deprecation warning by removing include RR::Adapters::TestUnit.
Switched ^ to \A and $ to \z in sanitize_css.
Added a SHORTHAND_CSS_PROPERTIES constant to flush better with Rails' sanitize helper.
Changed version in gemspec to 1.2.1