default_executable= have been deprecated
allow prefixed @id attributes to allow internal linking
Fixing search box location.
Remove redundant 1.8 compatibilty
Commit df505a7 removed ruby1.8.rb but it was still included in the gemspec which caused Bundler to complain about an invalid Gemspec. *NOTE* There are five test failures when running 'rake'. I checked out the last commit before Tom's change (d3594f6) and that also has these five failures so I'm happy that we didn't introduce them.
The sanitize gem requires 1.8.7 or later, so compatibility with earlier versions is moot