Add Christoph Gohlke, for the issue 4120 work.
diff --git a/Misc/ACKS b/Misc/ACKS
index f3ef2e7..28f7538 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -275,6 +275,7 @@
 Jonathan Giddy
 Johannes Gijsbers
 Michael Gilfix
+Christoph Gohlke
 Tim Golden
 Chris Gonnerman
 David Goodger