[css-2021] Add translate/rotate/scale to exception list. w3c#4515

Author: fantasai

css-2021/Overview.bs

@@ -818,6 +818,8 @@ Safe to Release pre-CR Exceptions</h2>
 		<li>The ''conic-gradient()'' gradient notation. See <a href="https://github.com/w3c/csswg-drafts/issues/2383#issuecomment-371340088">decision</a>.
 
 		<li>The <a spec=css-sizing-4 property>aspect-ratio</a> property. [[!CSS-SIZING-4]]
+
+		<li>The 'translate', 'rotate', and 'scale' properties. [[!CSS-TRANSFORMS-2]]
 	</ul>
 
 	The following features have been explicitly and retroactively cleared