prepare changelog for release (from GitHub Actions)

Author: CCDL-Bot

CHANGELOG.md

@@ -4,6 +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/).
 
 ## [Unreleased]
+## [0.10.1] 2021-04-04
 
 ### Changed
 - Updated event step and action step definitions.