Hiding downloads for UML2 5.2.1 release.
diff --git a/downloads/hidden.txt b/downloads/hidden.txt
index e69de29..922cac2 100644
--- a/downloads/hidden.txt
+++ b/downloads/hidden.txt
@@ -0,0 +1 @@
+modeling/mdt/5.2.1/R201608220739
\ No newline at end of file