docs+build: Prepare release of version 0.4.0 (beta2)

Change-Id: I2847efb35a21214c586a417d5d3ac58f11365908
Refs: #3252
diff --git a/docs/release-notes/release-notes-0.4.0.rst b/docs/release-notes/release-notes-0.4.0.rst
index 7083e9a..b351d3c 100644
--- a/docs/release-notes/release-notes-0.4.0.rst
+++ b/docs/release-notes/release-notes-0.4.0.rst
@@ -40,6 +40,9 @@
 - Overloads of ``Face::registerPrefix`` and ``Face::setInterestFilter`` that do not accept
   SigningInfo parameter (:issue:`2932`)
 
+- tlvdump tool (:issue:`3196`).  Use ``ndn-dissect`` program from ndn-tools repository
+  `<https://github.com/named-data/ndn-tools>`__
+
 Removed:
 ^^^^^^^^