Upgrade pre-test (list potential conflicts with overrides)
Before upgrading, a list of potential conflicts to existing overrides could be shown (e.g. if the "checksum" of a method is different (changed) in the new version, and the function is also overwritten, it could be flagged to the user doing the upgrade, so he knows where to put extra attention.
Thanks for the idea, Morten! As we already check the modified files before starting the upgrade, we can add this step as well.
To make sure we won't lose it, I copied your suggestion directly in the repository (https://github.com/PrestaShop/autoupgrade/issues/122). As we have finally published the v4.0.0 for the module, we will be able now for improvements.