[master] 156f91377 Mention VTest in "Changes" for 6.2.

[Geoff Simmons]

commit 156f91377b969f7aea03d64dbba5c75f7f4ea7ad
Author: Geoff Simmons <geoff at uplex.de>
Date:   Thu Mar 14 17:33:29 2019 +0100

    Mention VTest in "Changes" for 6.2.

diff --git a/doc/sphinx/whats-new/changes-6.2.rst b/doc/sphinx/whats-new/changes-6.2.rst
index 56cf52bf3..f6db5c625 100644
--- a/doc/sphinx/whats-new/changes-6.2.rst
+++ b/doc/sphinx/whats-new/changes-6.2.rst
@@ -221,6 +221,14 @@ When :ref:`varnishtest(1)` is invoked with either of the ``-L`` or
 generated from VCL can also be inspected after a test. By default, the
 temporary directory is deleted after each test.
 
+Since around the time of the last release, we have begun the project
+`VTest`_, which is adapted from :ref:`varnishtest(1)`, but is made
+available as a stand-alone program useful for testing various HTTP
+clients, servers and proxies (not just Varnish). But for the time
+being, we still use :ref:`varnishtest(1)` for our own testing.
+
+.. _VTest: https://github.com/vtest/VTest
+
 Changes for developers and VMOD authors
 =======================================