[css-values-3] Fill in Changes list.

Author: tabatkins

css-values-3/Overview.bs

@@ -7,6 +7,7 @@ Status: ED
 Work Status: Testing
 ED: https://drafts.csswg.org/css-values-3/
 TR: https://www.w3.org/TR/css-values/
+Previous Version: https://www.w3.org/TR/2016/CR-css-values-3-20160929/
 Previous Version: https://www.w3.org/TR/2015/CR-css-values-3-20150611/
 Previous Version: https://www.w3.org/TR/2013/CR-css3-values-20130730/
 Previous Version: https://www.w3.org/TR/2013/CR-css3-values-20130404/
@@ -2112,6 +2113,17 @@ Registration for the <code>about:invalid</code> URL scheme</h3>
 	</table>
 
 
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+
 <h2 class="no-num" id="acknowledgments">
 Acknowledgments</h2>
 
@@ -2162,6 +2174,11 @@ Changes</h2>
 		<li>Clarified that high-resolution screens should anchor on device pixels, not physical units.
 			(<a href="https://drafts.csswg.org/css-values-3/issues-cr-2016#issue-8">Issue 8</a>)
 		<li>Clarified definition of ''url()'' to normatively say that it accepts unquoted syntax.
+		<li>Defined that fragment-only ''url()'' are specially handled to always be page-local links,
+			regardless of base-url shenanigans.
+			(See [[#local-urls]].)
+		<li>Defined attr() parsing in terms of the Syntax spec, not CSS2.1 grammar.
+			(See [[#attr-notation]].)
 	</ul>
 
 	A <a href="https://drafts.csswg.org/css-values-3/issues-cr-2016">Disposition of Comments</a> is available.