I'm happy to announce the release of the first version of Application
Migrator. This app aims to help you (extension developers) to create
migrations between your extension versions at wiki level, through XObjects.
It features an extensible framework that allows you to define new
migrators and thus perform every kind of migration that you'll like in
addition to the ones provided by default.
If you are interested by this extensions, I suggest that you check out
 for documentation and  if you want to start building your own