Update CHANGELOG.md

Author: cicirello

CHANGELOG.md

@@ -4,11 +4,13 @@ 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 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] - 2022-11-17
+## [Unreleased] - 2022-11-18
 
 ### Added
 
 ### Changed
+* SequenceSampler converted from a utility class of static methods to an interface, retaining the existing static
+  methods that use a default source of randomness, but introducing nextSample methods for classes to implement.
 
 ### Deprecated