Issue #1515: Enable use of deepcopy() with instance methods.  Patch by Robert Collins.
diff --git a/Misc/ACKS b/Misc/ACKS
index 61d297d..f3ef2e7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -145,6 +145,7 @@
 Dave Cole
 Benjamin Collar
 Jeffery Collins
+Robert Collins
 Paul Colomiets
 Matt Conway
 David M. Cooke