add changelog entry

Author: kbond

src/TwigComponent/CHANGELOG.md

@@ -7,6 +7,8 @@
 -   Add `PreMount` priority parameter.
 
 -   Add `PostMount` hook.
+-   Add `HasAttributesTrait` to help with adding html attributes (ie class, style)
+    to your component's root node.
 
 ## 2.0.0