[css-text-4] Update Changes list

Author: fantasai

css-text-4/Overview.bs

@@ -10400,6 +10400,16 @@ Acknowledgements</h2>
 <h2 class="no-num" id="changes">
 Changes</h2>
 
+	Significant changes since the <a href="https://www.w3.org/TR/2023/WD-css-text-4-20230301/">1 March 2022 Working Draft</a> include:
+	* Completed the translation of 'white-space' to multiple longhands by
+		* adding ''break-spaces'' to 'white-space-collapse' so that all shorthand values can be represented in the longhands
+			(<a href="https://github.com/w3c/csswg-drafts/issues/8256">Issue 8256</a>)
+		* integrating all longhand keywords into the 'white-space' shorthand
+		* updating prose accordingly
+	* Renamed <css>text-space-collapse</css> and <css>text-space-trim</css>
+		to 'white-space-collapse' and 'white-space-trim'.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/8273">Issue 8273</a>)
+
 	Significant changes since the <a href="https://www.w3.org/TR/2022/WD-css-text-4-20221231/">31 December 2022 Working Draft</a> include:
 	* Redesigned 'text-spacing' by:
 		* Removing non-useful keyword combinations