update changelog

CHANGELOG.md

@@ -1,22 +1,3 @@
 - ENHANCEMENT
-  - improve and normalize microblog formatting
-  - add font and css preloading links
-  - add node `gulp` script to package.json (@AgentEnder)
-  - add minimal working css for printing
-  - split out mobile css
-  - load static css/js assets from data template:
-    This way users can hash static assets and overwrite the data template
-    to deliver the hashed assets. That's helpful if you have to deal with
-    long cache settings but want to ensure your updated assets are delivered
-    to clients.
-  - add new site parameter `geekdocSearchShowParent` #17 (@atorrescogollo)
-  - add new page parameter `geekdocHiddenTocTree` #16 (@atorrescogollo)
-  - add new page parameter `geekdocDescription` #15 (@atorrescogollo)
-  - update clipboard.js to v2.0.6
-  - update mermaid to v8.8.3
-- BUGFIX
-  - use relative URL's for fonts (@atorrescogollo)
-- OTHER
-  - fix typos (@weidenhaus)
-- INTERNAL
-  - publish Lighthouse CI overwiew to PR's
+  - normalize included svg icons and iconfonts
+  - add new site parameter `geekdocCollapseSection` #23