[css-ui-3] Update Appendixes

Author: frivoal

css-ui/Overview.bs

@@ -1501,6 +1501,7 @@ Thanks to feedback and contributions from
 <span class="h-card">Masayuki Nakano</span>,
 <span class="h-card">Mats Palmgren</span>,
 <span class="h-card">Brad Pettit</span>,
+<span class="h-card">Chris Rebert</span>,
 <span class="h-card">François Remy</span>,
 <span class="h-card">Andrey Rybka</span>,
 <span class="h-card">Simon Sapin</span>,
@@ -1519,11 +1520,15 @@ and
 
 This appendix is <em>informative</em>.
 
-This appendix describes functional changes from the
+This appendix describes changes from the
 <a href="http://www.w3.org/TR/2015/CR-css-ui-3-20150707/"
    >Candidate Recommendation (CR) of 7 Jul 2015</a>.
 
-<em>No changes so far.</em>
+<ul>
+	<li>Editorial and markup tweaks
+	<li>Clarify that cursor selection is based on hit testing
+	<li>Clean-up default style sheet additions for HTML
+</ul>
 
 <h2 class="no-num" id="security-privacy-considerations">Appendix C. Considerations for Security and Privacy</h2>