bump to 4.1.2

Author: gsantiago

Diff for: CHANGELOG.md

@@ -5,6 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [4.1.2] - 2022-01-02
+- Implement filter as a Transform stream to fix piping #77 by @marnusw
+
 ## [4.1.1] - 2021-08-14
 
 - Remove decimals from ms #73