[css-easing-1] Update changes section

Author: fantasai

css-easing-1/Overview.bs

@@ -7,6 +7,7 @@ Level: 1
 Group: csswg
 ED: https://drafts.csswg.org/css-easing/
 TR: https://www.w3.org/TR/css-easing-1/
+Previous version: https://www.w3.org/TR/2018/WD-css-easing-1-20181009/
 Previous version: https://www.w3.org/TR/2018/WD-css-timing-1-20180926/
 Previous version: https://www.w3.org/TR/2017/WD-css-timing-1-20170221/
 Editor: Brian Birtles, Mozilla https://www.mozilla.org/, bbirtles@mozilla.com, w3cid 43194
@@ -442,17 +443,13 @@ Changes since last publication {#changes}
 ==============================
 
 The following changes have been made since the <a
-  href="https://www.w3.org/TR/2017/WD-css-timing-1-20170221/">21 February
-2017 Working Draft</a>:
+  href="https://www.w3.org/TR/2018/WD-css-easing-1-20181009/">9 October
+2018 Working Draft</a>:
 
 *   Reworded specification to refer to &ldquo;easing functions&rdquo;
     rather than &ldquo;timing functions&rdquo;
     and use more general language that does not assume these functions are only
     applied to animations.
-*   Removed `frames()` easing function.
-*   Added ''steps()/jump-start'', ''steps()/jump-end'',
-    ''steps()/jump-none'', and ''steps()/jump-both'' keywords to
-    ''steps()'' easing function.
 
 Acknowledgements {#acknowledgements}
 ================