Update for release

Author: brews

CHANGELOG.md

@@ -4,7 +4,7 @@ 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]
+## [0.16.1] - 2022-01-27
 ### Fixed
 - Fix the wetday frequency correction so that different replacement values are used, rather than a single one (PR #174, PR #176, @emileten, @delgadom).