[css3-ui] add new appendix to list of changes.

Author: Tantek Çelik

css-ui/Overview.bs

@@ -1524,7 +1524,8 @@ implemented features.
 <ul>
 <li>'box-sizing' effects on CSS 2.1 width and height computations specified much more explicitly.
 <li>'cursor' image formats normatively required
-<li>'caret-color' is inherited
+<li>'caret-color' is inherited and animatable
+<li>New informative appendix on Considerations for Security and Privacy
 
 </ul>
 

css-ui/Overview.html

@@ -3438,7 +3438,9 @@ <h3 class="no-num heading settled" id="changes-list"><span class="content">List
 
     <li><a class="property" data-link-type="propdesc" href="#propdef-cursor">cursor</a> image formats normatively required
 
-    <li><a class="property" data-link-type="propdesc" href="#propdef-caret-color">caret-color</a> is inherited
+    <li><a class="property" data-link-type="propdesc" href="#propdef-caret-color">caret-color</a> is inherited and animatable
+
+    <li>New informative appendix on Considerations for Security and Privacy
 
 </ul>