[cssom-1] Update Changes section

Author: xfq

cssom-1/Overview.bs

@@ -3153,9 +3153,41 @@ Change History {#change-history}
 This section documents some of the changes between publications of this specification. This section is not exhaustive. Bug fixes and editorial changes are
 generally not listed.
 
-Changes From 5 December 2013 {#changes-from-5-december-2013}
+Changes From 17 March 2016 {#changes-from-17-march-2016}
 ------------------------------------------------------------
+* Serialization of <<resolution>> is changed.
+* <code>[CEReactions]</code> IDL extended attributes are added.
+* Resolved value for logical properties are added.
+* <code>getComputedStyle</code> for 'display': ''display/contents'' is changed.
+* <code>MediaList.item</code> now returns serialization.
+* <code>MediaList.item</code> does not serialize shorthand if importance differs.
+* Other specifications are allowed to specify resolved value.
+* <code>index</code> argument in <code>insertRule</code> is now optional.
+* <code>href</code> attribute of <code>Stylesheet</code> and <code>CSSImportRule</code> now uses <code>USVString</code>.
+* <code>CSSOMString</code> is introduced.
+* Serialization of <code>CSSMediaRule</code> and <code>CSSFontFaceRule</code> is added.
+* <a for="CSSStyleDeclaration">Updating flag</a> is added to CSS declaration block to avoid serialize-and-reparse on style attribute.
+* Serialization of a declaration value is now properly defined.
+* <code>getComputedStyle</code> now returns the style rules of the node's document.
+* A {{TypeError}} is thrown when the pseudo-element passed to <code>getComputedStyle</code> is unknown or ''::slotted()''.
+* {{CSS}} is switched from interface to namespace.
+* <code>setPropertyValue</code> and <code>setPropertyPriority</code> are removed from {{CSSStyleDeclaration}} due to lack of interest from implementations.
 * The <code>styleSheets</code> IDL attribute is moved from {{Document}} to {{DocumentOrShadowRoot}}.
+* LinkStyle.sheet now returns <code>CSSStyleSheet</code> instead of <code>StyleSheet</code>
+* Deprecated CSSStyleSheet members are defined.
+* The <code>CSSRule.type</code> attribute is deprecated.
+* Serialization of <<ratio>> is added.
+* <code>CSSStyleDeclaration.cssText</code> now returns the empty string for computed style.
+* <a>Custom properties</a> are included in <code>getComputedStyle</code>.
+* MathML IDL is introduced.
+* Serialization of {{CSSKeyframesRule}} and {{CSSKeyframeRule}} is added.
+* Serialization of media query is changed.
+* A shorthand is not serialized if there are longhands with other property group / mapping logic in between the longhands of that shorthand.
+* {{CSSStyleRule}} serialization is aware of nesting now.
+* Constructable stylesheets is introduced.
+
+Changes From 5 December 2013 {#changes-from-5-december-2013}
+------------------------------------------------------------
 * API for alternative stylesheets is removed: <code>selectedStyleSheetSet</code>,
     <code>lastStyleSheetSet</code>, <code>preferredStyleSheetSet</code>,
     <code>styleSheetSets</code>, <code>enableStyleSheetsForSet()</code> on {{Document}}.
@@ -3174,7 +3206,6 @@ Changes From 5 December 2013 {#changes-from-5-december-2013}
 * Serialization of :lang() is changed.
 * Serialization of <<color>> and <<number>> is changed.
 * {{CSSStyleDeclaration/setProperty()}} on {{CSSStyleDeclaration}} is changed.
-* <code>setPropertyValue</code> and <code>setPropertyPriority</code> are removed from {{CSSStyleDeclaration}} due to lack of interest from implementations.
 
 
 Changes From 12 July 2011 To 5 December 2013 {#changes-from-12-july-2011-to-5-december-2013}