Update CHANGELOG.md

Author: devinroth

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [1.2.4] - 2018-10-30
+### Added
+- Enable UDP Client Broadcast
+
 ## [1.2.3] - 2018-10-30
 ### Changed
 - Updated syntax/settings to Swift 4.2/Xcode 10.0