Prepare release

Signed-off-by: Andy Lo-A-Foe <andy.loafoe@gmail.com>

Author: loafoe

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 # v0.46.0
 - DICOM: Breaking API changes
+- IAM SMS Gateway: Initial support
+- IAM SMS Templates: Initial support
 
 # v0.45.0
 - CDR: Support for R4