Added more robust allowed protocol checking via a PROTOCOL_SEPARATOR constant in whitelist.rb.
scrub_attributes will now remove attributes without a value.
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