A fix for the escaped html problem in :html_list
Consider our default html_separator as html_safe.
…b_string to be html_safe by default
Added ability to pre-configure crummy options
Refactoring plain html to content_tag
:li_class fixed in StandardRenderer#crumb_to_html_list
render_crumbs can now apply styles to first and last elements
options[:first_class], options[:last_class] which are html classes applied to first and last elements respectively.