* solves the trouble of having to setup PATH and PYTHONPATH in a project
specific way and keep them changing
* works well with virtualenvs
* works under windows where the shebang is meaningless
* works if your python is not named "python3"
* can use "pip3 install --user --editable ."
* creates an egg-link in ~/.local/share/... pointing to $PWD
* generates the scripts and copies them to ~/.local/bin which is likely
already in your $PATH
* analogously under windows
* or call scripts as "python3 -m artiq.frontend.master"
