DOC: Update changelog for release

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] ##
+## [0.8.0] - 2024-08-23 ##
 
 ### Added ###
 
@@ -32,8 +32,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Better handling of missing imports, with nice messages for users.
 * No longer use configuration of advancedtools to set to and from email addresses
 
-### Deprecated ###
-
 ### Removed ###
 
 * Support for Python 3.7
@@ -241,7 +239,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Some StructureElements changed (see "How to upgrade" in the docs):
   - Dict, DictElement and DictDictElement were merged into DictElement.
   - DictTextElement and TextElement were merged into TextElement. The "match"
-    keyword is now invalid for TextElements.
+	keyword is now invalid for TextElements.
 - JSONFileConverter creates another level of StructureElements (see "How to upgrade" in the docs)
 - create_flat_list function now collects entities in a set and also adds the entities
   contained in the given list directly