Enable diff on eligibles files before attempting a backup restore

Hello,

First congratulations for this dev, continue in this direction please ! This is exactly the kind of development that keep the easy of use in mind (like most Mac applications).

Now the question itself: is it in your scope of development to add an option to quickly preview any differences between a given backuped file and the current one ? (Of course, this option would be available only on predefined types of files like text or sources codes ones of instance)

Thanks !