Update 0.4.3.md

https://github.com/inventree/InvenTree/pull/1892

docs/releases/0.4.3.md

@@ -4,6 +4,10 @@ title: Release 0.4.3
 
 ## Release 0.4.2
 
+### Installing Stock Items
+
+[#1892](https://github.com/inventree/InvenTree/pull/1892) re-introduces a feature which had disappeared due to a regression. Serialized stock items can now (again) be "manually" installed into other stock items by the user.
+
 ### Bug Fixes
 
 | Pull Request | Description |