code: def render(base_filename, context = (Object.new.instance_eval { binding }), &block)
           ret = nil
           @render_library.each { |ext, handler| ret = handler.call("#{base_filename}.#{ext}".freeze, context, &block); return ret if ret; }
           ret
        end
docs: Attempts to render the requested file (i.e. `'index.html'`) using all known rendering handlers.