debian: Begin the 0.13.0 series with a new changelog entry
diff --git a/debian/changelog b/debian/changelog
index 608867d..815d30b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+openbsc (0.13.0) UNRELEASED; urgency=low
+
+  * New upstream tag and additional patches.
+
+ -- Holger Hans Peter Freyther <holger@freyther.de>  Tue, 16 Apr 2013 09:23:18 +0200
+
 openbsc (0.12.0+git26-7) unstable; urgency=low
 
   * 64bit fix for the MGCP rewriting