tlv: require shortest encoding for VAR-NUMBER

refs #4946

Change-Id: If106e6461f7a0b518969db33d9f761a1e20f7d91
diff --git a/changelog.rst b/changelog.rst
index b24c849..94c68d8 100644
--- a/changelog.rst
+++ b/changelog.rst
@@ -6,6 +6,8 @@
 
 - Rewrite TLV syntax specifications using `IETF Augmented BNF (RFC 5234) <https://tools.ietf.org/html/rfc5234>`__
 
+  + Require shortest encoding for TLV-TYPE and TLV-LENGTH numbers
+
 - **Interest**
 
   + Remove ``Selectors`` element