docs: add changelog entry

Author: obycode

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to the versioning scheme outlined in the [README.md](README.md).
 
+## [2.4.0.0.1]
+
+This is a minor change to add `txid` fields into the log messages from failing
+contract deploys. This will help tools (and users) more easily find the log
+messages to determine what went wrong.
+
 ## [2.4.0.0.0]
 This is a **consensus-breaking** release to revert consensus to PoX, and is the second fork proposed in SIP-022.