DOC: document release in changelog

CHANGELOG.md

@@ -5,24 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] ##
-
-### Added ###
-
-### Changed ###
-
-### Deprecated ###
-
-### Removed ###
+## [0.11.2] - 2023-03-14 ##
 
 ### Fixed ###
 - root logger is no longer used to create warnings. Fixes undesired output in 
   stderr
 
-### Security ###
-
-### Documentation ###
-
 ## [0.11.1] - 2023-03-07 ##
 (Florian Spreckelsen)