Update 16-09-19TPAC-1.md

Author: hayatoito

meetings/16-09-19TPAC-1.md

@@ -45,10 +45,15 @@ Dominic (Google): `<button>` produces something that is focusable and has an ARI
   - End tag "done." Most end tag handling is parser state and tree construction management, but script does substantial processing.
   - Participate in form submission.
 
-### Shadow DOM feature requests for v2
+### Shadow DOM
+#### Remaining issues for v1
 
 - `<iframe>` and the History API
   - https://github.com/w3c/webcomponents/issues/184
+
+#### Feature requests for v2
+
+
 - [Optional topic] Support Custom Pseudo-elements
   - https://github.com/w3c/webcomponents/issues/300
   - It looks there is no strong interests on this.