preparing for releasing v0.2.1

Author: tobixen

CHANGELOG.md

@@ -6,7 +6,13 @@ This file should adhere to [Keep a Changelog](https://keepachangelog.com/en/1.1.
 
 This project should adhere to [Semantic Versioning](https://semver.org/spec/v2.0.0.html), though some earlier releases may be incompatible with the SemVer standard.
 
-## [Unreleased]
+## [0.2.1] - 2026-03-11
+
+Lots of changes have been done since v0.1.0.  I'm not sure the changelog is complete, I didn't get time to do a proper QA on it.  CalDAV version 3.0 is required.
+
+Version 1.0 will be released in some few days, this may be considered as a pre-release.
+
+(Version 0.2.0 was never published due to problems with the auto-publish workflow)
 
 ### Added
 - `--config-section` CLI option: select a named section from the caldav config file (passed through to `get_davclient`)