Anything which needs to be (at least partly) touched by stow should stay
in the top-level normal directory name that they are. Anything that
*only* concerns the repository, not the dotfiles, should be moved into a
hidden folder, preceded by a dot.
These directories should still contain a `.stow-local-ignore` file
patterning everything which should not show up in stow (i.e. `^/.*`,
everything) since it is not guaranteed that stow will ignore the
.dotfile directories. The installation script does ignore them on its
own, for now, but is not guaranteed to in the future either.
