docs: update changelog

Author: egil

CHANGELOG.md

@@ -1,9 +1,10 @@
-# 0.18.0
+# 0.17.1
 
-Released on Tuesday, February 15, 2022.
+Released on Friday, February 3, 2023.
 
 - Added a new style comparer which orders the styles before comparing them. By [@grishat](https://github.com/SebastianStehle).
 - Change Core.ComparisonSource.GetPathIndex() to return the index inside ChildNodes instead of Children. By [@edxlhornung](https://github.com/edxlhornung).
+- Fixed element comparison such that it uses case insensitive comparison of the name of the node. By [@egil](https://github.com/egil).
 
 # 0.17.0