diff -r 42d34eeb283c -r e26f9df07530 .hgtags
--- a/.hgtags	Sat Apr 11 20:00:05 2015 +0200
+++ b/.hgtags	Sat Apr 11 20:00:33 2015 +0200
@@ -29,3 +29,4 @@
 9c1f2136532626c7cb5fae14a2aeac53be3aeb67 Isabelle2013-1
 4dd08fe126bad63aa05741d55fb3e86a2dbfc795 Isabelle2013-2
 8f4a332500e41bb67efc3e141608829473606a72 Isabelle2014
+42d34eeb283c645de7792a327e86d846f9cfb5f9 Isabelle2015-RC0