#18357: add tests for dictview set difference.  Patch by Fraser Tweedale.
diff --git a/Misc/ACKS b/Misc/ACKS
index 2279417..2d3b929 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1252,6 +1252,7 @@
 Stephen Turner
 Theodore Turocy
 Bill Tutt
+Fraser Tweedale
 Doobee R. Tzeck
 Eren Türkay
 Lionel Ulmer