Update Change Log

MarkBaker · MarkBaker · commit 4a071ce578a3 · 2022-05-05T13:57:28.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -13,7 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 
 ### Changed
 
-- Nothing
+- Memory and speed improvements, particularly for the Cell Collection, and the Xlsx and Xls Writers.
 
 ### Deprecated
 
