Merge pull request #191 from carmacleod/car/issue190

allow aria-setsize and aria-posinset on tr in treegrid

Author: scottaohara

html-aria/index.html

@@ -2292,7 +2292,7 @@ 
             <td>
               <a href="#index-aria-row">`role=row`a>, may be
               explicitly declared when child of a `table` element
-              with `role=grid`
+              with `role=grid` or `treegrid`
             td>
             <td>
               <p>
@@ -4084,25 +4084,35 @@ 
               none
             td>
             <td>
+              <p>If child of `role=grid`, `rowgroup`, `table` or `treegrid`:p>
               <ul>
                 <li>
                   <a data-cite="wai-aria-1.1#aria-colindex">`aria-colindex`a>
                 li>
                 <li>
                   <a title="aria-rowindex" data-cite="wai-aria-1.1#aria-rowindex">`aria-rowindex`a>
                 li>
-                <li>
-                  <a data-cite="wai-aria-1.1#aria-level">`aria-level`a>
-                li>
                 <li>
                   <a data-cite="wai-aria-1.1#aria-selected">`aria-selected` (state)a>
                 li>
                 <li>
                   <a data-cite="wai-aria-1.1#aria-activedescendant">`aria-activedescendant`a>
                 li>
+              ul>
+              <p>Also, if child of `role=treegrid`:p>
+              <ul>
                 <li>
                   <a data-cite="wai-aria-1.1#aria-expanded">`aria-expanded` (state)a>
                 li>
+                <li>
+                  <a data-cite="wai-aria-1.1#aria-level">`aria-level`a>
+                li>
+                <li>
+                  <a data-cite="wai-aria-1.1#aria-posinset">`aria-posinset`a>
+                li>
+                <li>
+                  <a data-cite="wai-aria-1.1#aria-setsize">`aria-setsize`a>
+                li>
               ul>
             td>
             <td>