[css-values-5][editorial] Add a Changes section, fix a typo, revert to ED.

Author: tabatkins

css-values-5/Overview.bs

@@ -3,9 +3,7 @@ Title: CSS Values and Units Module Level 5
 Group: CSSWG
 Shortname: css-values
 Level: 5
-Status: FPWD
-Prepare for TR: yes
-Date: 2024-09-03
+Status: ED
 Work Status: Exploring
 ED: https://drafts.csswg.org/css-values-5/
 TR: https://www.w3.org/TR/css-values-5/
@@ -258,7 +256,7 @@ Interpolation Progress Functional Notations</h2>
 
 	The ''progress()'', ''media-progress()'', and ''container-progress()'' [=functional notations=]
 	represent the proportional distance
-	of a given value (the <dfn noxexport>progress value</dfn>)
+	of a given value (the <dfn noexport>progress value</dfn>)
 	from one value (the <dfn noexport>progress start value</dfn>)
 	to another value (the <dfn noexport>progress end value</dfn>).
 	They allow drawing a progress ratio from
@@ -2181,28 +2179,34 @@ Acknowledgments</h2>
 <h2 class="no-num" id="changes">
 Changes</h2>
 
-<h3 class=no-num id="changes-recent">
-Recent Changes</h3>
-
-	(This is a subset of [[#additions-L4]].)
 
 <h3 class=no-num id="additions-L4">
 Additions Since Level 4</h3>
 
 	Additions since <a href="http://www.w3.org/TR/css-values-4/">CSS Values and Units Level 4</a>:
 
-	<ul>
-		<li>Added the ''toggle()'' and ''attr()'' notations
-	</ul>
+	* Added the "comma-upgrading" rules for functional notations.
+	* Defined several <<url-modifier>>s for <<url>> functions.
+	* Added the [[#progress|*-progress()]] family of functions, to represent interpolation progress between two values.
+	* Added the [[#mixing|*-mix()]] family of functions, to represent actually interpolating between two values.
+	* Added ''first-valid()'', to allow CSS's forward-compatible parsing behavior (drop invalid things, go with what's left) to be used with custom properties and other contexts where validity isn't known until <em>after</em> parsing.
+	* Added the ''toggle()'' and ''attr()'' functions.
+	* Added the ''random()'' and ''random-item()'' functions.
+	* Added the ''sibling-count()'' and ''sibling-index()'' functions.
+	* Added the ''calc-size()'' function, and the related 'interpolate-size' property.
+
 
-<h2 class="no-num" id="sec-pri">
-Security and Privacy Considerations</h2>
+<h2 class="no-num" id="security">
+Security Considerations</h2>
 
 	This specification mostly just defines units that are common to CSS specifications,
 	and which present no security concerns.
 
 	Note: Does URL handling have a security concern?  Probably.
 
+<h2 class="no-num" id="privacy">
+Privacy Considerations</h2>
+
 	This specification defines units that expose the user's screen size
 	and default font size,
 	but both are trivially observable from JS,