[css-pseudo-4] Update Acknowledgements

Author: fantasai

css-pseudo-4/Overview.bs

@@ -12,7 +12,7 @@ Previous Version: https://www.w3.org/TR/2019/WD-css-pseudo-4-20190225/
 Previous Version: https://www.w3.org/TR/2016/WD-css-pseudo-4-20160607/
 Previous Version: https://www.w3.org/TR/2015/WD-css-pseudo-4-20150115/
 !Issues List: <a href="https://drafts.csswg.org/css-pseudo/#issues-index">Tracked in Editor's Draft</a>
-Editor: Daniel Glazman, Disruptive Innovations, w3cid 13329
+Former Editor: Daniel Glazman, Disruptive Innovations, w3cid 13329
 Editor: Elika J. Etemad / fantasai, Apple, http://fantasai.inkedblade.net/contact, w3cid 35400
 Editor: Alan Stearns, Adobe Systems Inc., stearns@adobe.com, w3cid 46659
 Abstract: This CSS module defines pseudo-elements, abstract elements that represent portions of the CSS render tree that can be selected and styled.
@@ -2014,9 +2014,11 @@ Acknowledgements</h2>
   The editors would like to specifically thank the following individuals for their
   contributions to this specification:
   Tab Atkins,
+  Delan Azabani,
   David Baron,
   Oriol Brufau,
   Razvan Caliman,
+  Stephen Chenney,
   Chris Coyier,
   Anders Grimsrud,
   Vincent Hardy,