fixed the data_files inclusion behavior
diff --git a/Misc/ACKS b/Misc/ACKS
index a97679c..2438d1e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -611,6 +611,7 @@
 Mark Russell
 Nick Russo
 Hajime Saitou
+George Sakkis
 Rich Salz
 Kevin Samborn
 Ilya Sandler