Addition: expand role allowances for fieldset element

closes #400

Updates allowances for the toolbar, menubar, menu, listbox, tablist, article, dialog and region roles to be used on the fieldset element.

Author: scottaohara

index.html

@@ -1111,9 +1111,20 @@ <h2 id="docconformance">
             <td>
               <p>
                 Roles:
+                <span class="proposed addition"> 
+                  <a href="#index-aria-article">`article`</a>,
+                  <a href="#index-aria-dialog">`dialog`</a>,
+                  <a href="#index-aria-listbox">`listbox`</a>,
+                  <a href="#index-aria-menu">`menu`</a>,
+                  <a href="#index-aria-menubar">`menubar`</a>,
+                </span>
                 <a href="#index-aria-none">`none`</a>,
-                <a href="#index-aria-presentation">`presentation`</a>
-                or <a href="#index-aria-radiogroup">`radiogroup`</a>. (<code><a href="#index-aria-group">group</a></code> is also allowed, but NOT RECOMMENDED.)
+                <a href="#index-aria-presentation">`presentation`</a>,
+                <a href="#index-aria-radiogroup">`radiogroup`</a>,
+                <span class="proposed addition">
+                  <a href="#index-aria-region">`region`</a>,
+                  <a href="#index-aria-tablist">`tablist`</a></span>,
+                  or <a href="#index-aria-toolbar">`toolbar`</a></span>. (<code><a href="#index-aria-group">group</a></code> is also allowed, but NOT RECOMMENDED.)
               </p>
               <p>
                 <a data-cite="wai-aria-1.2#global_states">Global `aria-*` attributes</a>