adds changelog

CHANGELOG.md

@@ -2,12 +2,18 @@
 
 ## UNRELEASED
 
+### Changes
+
+* Vue 3 migration.
+
 ### Fixes
 
 * Bug fix. When a piece or a page is created, published, then unpublished, and subsequently exported and re-imported, the manager modal incorrectly showed no published version. This occurs because the `lastPublishedAt` property of the draft document was set to null upon import, misleading the representation of the document's published state. Now it retains the original document's `lastPublishedAt` value.
 
 ## 1.3.0 (2024-02-21)
 
+### Changes
+
 * Requires the create and edit permissions to use the import utility operation
 
 ## 1.2.1 (2024-01-24)