Step 1) cd into this directory.
Step 2) Run `make`.
Step 3) If ~/.config/dlu already exists, move it.
Step 4) Run `ln -s -- ~/.config/dlu .`.
Step 5) You can now run ../dlu.py.
Step 6) Run `rm -- ~/.config/dlu`.
Step 7) If ~/.config/dlu already existed, restore it.
Step 8) If ~/.config/dlu did not exist, install dlu and set it up.