DOC: Update changelog for release

CHANGELOG.md

@@ -5,7 +5,8 @@ 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] ##
+## [0.6.0] - 2023-06-23 ##
+(Florian Spreckelsen)
 
 ### Added ###
 
@@ -22,12 +23,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   that specifies the path with which the crawler can be rerun to authorize
   pending changes.
 
-### Changed ###
-
-### Deprecated ###
-
-### Removed ###
-
 ### Fixed ###
 
 - Query generation when there are only backrefs or backrefs and a name
@@ -36,8 +31,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - usage of ID when looking for identified records
 - [#41](https://gitlab.com/caosdb/caosdb-crawler/-/issues/41)
 
-### Security ###
-
 ### Documentation ###
 
 - Expanded documentation, also has (better) tutorials now.