[master] cba5490ae Add heading to 6.3 changelog, ready to fork to 6.3 branch

[PÃ¥l Hermunn Johansen]

commit cba5490ae0878672bfe3c6af8372e8facd82a89a
Author: Pål Hermunn Johansen <hermunn at varnish-software.com>
Date:   Mon Sep 16 11:05:07 2019 +0200

    Add heading to 6.3 changelog, ready to fork to 6.3 branch

diff --git a/doc/changes.rst b/doc/changes.rst
index 9c8d160af..ac1b47902 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -36,6 +36,9 @@ NEXT (2020-03-15)
 Varnish Cache 6.3.0 (2019-09-15)
 ================================
 
+In addition to a significant number of bug fixes, these are the most
+important changes in 6.3:
+
 * The Host: header is folded to lower-case in the builtin_vcl.
 
 * Improved performance of shared memory statistics counters.