[css-fonts-4] Update changes

Author: svgeesus

css-fonts-4/Overview.bs

@@ -7329,7 +7329,26 @@ Changes
 <h3 id="changes-2021-07-29">Changes from the <a href="https://www.w3.org/TR/2021/WD-css-fonts-4-20210729/">29 July 2021 Working Draft</a> </h3>
 
 <ul>
-	<li>Corrected IDL for CSSFontPaletteValuesRule</li>
+	<!-- to 03 Dec 2021 -->
+	<li>Security and Privacy are now separate sections</li>
+	<li>Linked to OpenType, TrueType and Graphite table definitions</li>
+	<li>Updated examples which had used "supports"</li>
+	<li>Removed old "supports" from format in src descriptor, replaced with new technology production</li>
+	<li>Moved font-technology & font-format to a new section </li>
+	<li>Formalized fetching and resource timing reporting, applied to fetching fonts</li>
+	<li>Removed the &lt;string> values from override-color and base-palette</li>
+	<li>Defined correct processing of conflicting override-colors</li>
+	<li>Introduced concept of complete palettes</li>
+	<li>Clearer description of override-colors</li>
+	<li>Removed conflict between FONT_PALETTE_VALUES_RULE and VIEWPORT_RULE</li>
+	<li>Defined context for resolving override-color colors, no longer per-element</li>
+	<li>Allowed base-palette to reference dark and light palettes</li>
+	<li>Changed properties in CSSFontPaletteValuesRule to be read-only</li>
+	<li>The palette-identifier parses as a dashed-ident rather than custom-ident, for extensibility</li>
+	<li>Renamed override-color descriptor to override-colors, because it accepts a list of colors</li>
+	<li>Clarified that base-palette and override-color take non-negative integers</li>
+	<li>Corrected grammar of the font shorthand property</li>
+	<li>Several corrections to the IDL for CSSFontPaletteValuesRule</li>
 	<li>Removed the "none" value from font-palette </li>
 	<!-- to 16 Aug 2021 -->
 	<li>Clarified incremental requirement</li>