Mediawiki provides a page Special:Contributions that can be used to find contributions made by a particular contributor.
Currently it provides an option to "Only show edits that are latest revision" (i.e) edits that have not been revised subsequently.

However, in tracking my own edits, I was needing an option on Special:Contributions (relevant to my own user name) to show the inverse, namely my contributions that have been edited by another user subsequently, ( so I could either review those edits or thank the other contributor.)

The Enhancement request would be for an option on Special:Contribution to filter the results to those that are NOT a current revision.