DOC: Update changelog for release

CHANGELOG.md

@@ -4,16 +4,12 @@ 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
+## [0.9.0] - 2022-11-02
+(Florian Spreckelsen)
 
 ### Changed (for changes in existing functionality)
-- ext_references: names will be shown instead of file names if they exist
 
-### Deprecated
-
-### Removed
+* ext_references: names will be shown instead of file names if they exist
 
 ### Fixed
 
@@ -25,11 +21,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Missing latitude or longitude does no longer cause a problem when the element
   is on the current page
 
-### Security
-
-### Documentation
-
-
 ## [0.8.0] - 2022-07-12
 (Timm Fitschen)