add recipes for pseudo-valueless enums
diff --git a/Misc/ACKS b/Misc/ACKS
index 85a476c..d81a424 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -549,6 +549,7 @@
 Joseph Hackman
 Barry Haddow
 Philipp Hagemeister
+John Hagen
 Paul ten Hagen
 Rasmus Hahn
 Peter Haight