This document, made by Sky Render (the fantranslator you're probably talking about) contains a list of changes. I don't know if it is 100% complete or accurate (altough it claims it is) but it sure is very picky, and it will help you figure changes out.
It does not take into account script-related changes, but it'll make you see not only what has been censored (little things if compared to Final Fantasy IV), but also what has been changed without apparent reasons.