Manages dotfiles with stow and make.

Make targets:
 * `console`: configs for os-independent cli tools
 * `fedora-packages`: install rpmfusion and fedora packages (standalone, should
   only need to be run once unless new packages or repos are added)
 * `fedora`: configs for fedora-specific gui tools (depends on `console`)
 * `restore`: restore committed versions of files in `stow\` and `sway-de/`

Note: stow is run with the `--adopt` option, which will overwrite files in the
stow directory with the version that would be replaced with a symlink. You can
do a `git diff` to see the differences and if you don't care about them you can
quickly revert to the committed versions with `make restore`. Makefile will do
it's best to abort if there are uncommitted changes in the repo.