[css-sizing-3] Update Changes section

Author: fantasai

css-sizing-3/Overview.bs

@@ -1075,15 +1075,18 @@ Compressible Replaced Elements</h2>
 Changes</h2>
 
 	<p>
-		Significant changes since the <a href="https://www.w3.org/TR/2017/WD-css-sizing-3-20170207/">7 February 2017 Working Draft</a> include:
+		Major changes since the <a href="https://www.w3.org/TR/2017/WD-css-sizing-3-20170207/">7 February 2017 Working Draft</a> include:
 
 	<ul>
 		<li>More accurate definition of min-content and max-content sizes for replaced elements.
 		<li>Compute new keywords to the initial value, not to a potentially non-existent ''width/auto'', when applied to the block axis.
 		<li>Specify that percent sizes on replaced elements zero out their min-content contribution.
 		<li>Fix confusing/wrong definition of percentage sizes resolved against a dependent containing block.
+			(This may require further work.)
 		<li>Deferred the ''width/stretch'' and ''width/fit-content'' keywords to Level 4
 			to allow for further consideration of their behavior in <a>indefinite</a> containing blocks.
+		<li>Pulled in full definitions for all of the sizing properties (rather than diffing them):
+			'width', 'height', 'min-width', 'min-height', max-width', 'max-height', and 'box-sizing'.
 	</ul>
 
 <h2 class=no-num id="acknowledgments">