TODO: It'd be nice if we documented all the implemented fixes, what program they're related to (the source code, maybe the related XDG issue, if it exists...)
TODO: Make a Makefile which supports environment, activation-list, user-install, install, clean, system-purge, user-purge.
TODO: Delete setup.sh, replace it with an executable force_xdg which supports the same commands as Makefile.