fails:CGI::HtmlExtension#blockquote when passed a String returns a 'blockquote'-element, using the passed String for the 'cite'-attribute
fails:CGI::HtmlExtension#blockquote when passed a String includes the passed block's return value when passed a block
fails:CGI::HtmlExtension#blockquote when passed a Hash returns a 'blockquote'-element, using the passed Hash for attributes
fails:CGI::HtmlExtension#blockquote when passed a Hash includes the passed block's return value when passed a block
