Another option is to have an "Unattended Upgrade" drop-down menu that has two check boxes. One check box enables the user to automatically overwrite manually edited files w/ package-maintainer-versions, the other allows the user to keep his custom files.
Another option is to have an "Unattended Upgrade" drop-down menu that has two check boxes. One check box enables the user to automatically overwrite manually edited files w/ package- maintainer- versions, the other allows the user to keep his custom files.