Make backed up files unhidden (i.e. remove .)

[Cal Williams]

In the storage location (i.e. the folder symlink point towards), the backed-up files often have a . prepended at the front (if not all). This requires running ls -a to see em.

It'd be nice if mackup removed the . from the backed up files so this isn't necessary. Of course the . will be replaced with the symlink file.

Miss this feature, coming from chezmoi.

Thanks for the great software!