Added a newline at the end of permit_scrubber.rb.
Initialized @css_selector_is_second_argument in determine_root_from.
Replaced html-scanner with Loofah.
Fixed Nokogiri::CSS::SyntaxErrors.
Replaced html-scanner with Loofah.
Changed filter_matches to return a new NodeSet instead of Array.
Removed test that use assert_tag since that's removed.
Removed selector_test.rb since HTML::Selector will be removed. Soon.
Readded html_document method since it is used integration tests.
Changed tests to assert_kind_of Loofah::HTML::Document.
Changed assert_select calls with substitution values to embed the strings in the selector. Substitution is no longer supported.