Post Update Compare Script

Hey all, 
A while back I came across a script that could be run against a CI update (via composer) and it would compare the files that changed against the old files (like the files in App >> Config) and report on which files needed to be merged (or at least reviewed). I cannot find the link to that script. I believe it came from github. Anyone remember such a thing?
TIA
Marc

tatter/patches or liaison/revision?

See https://github.com/kenjis/ci4-composer-i...deigniter4

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Thanks. The Liaison ( https://github.com/paulbalandan/liaison-revision ) sounds like the right one (or at least the closest to what I remember. The one I remember just created backups for the files in conflict (like the routes config file, you would end up with the CI standard version and a copy that had all your changes for comparison).