CONTRIBUTORS

--- a/CONTRIBUTORS	Sun Jul 22 20:02:13 2018 +0200
+++ b/CONTRIBUTORS	Sun Jul 22 21:04:49 2018 +0200
@@ -3,6 +3,10 @@
 listed as an author in one of the source files of this Isabelle distribution.
 
 
+Contributions to this Isabelle version
+--------------------------------------
+
+
 Contributions to Isabelle2018
 -----------------------------