A `Quit` entry in File menu.
npm install @fcollonval/jupyterlab_shutdownQuit entry in File menu.
NotebookApp.shutdown_button introduce
bash
jupyter labextension install @fcollonval/jupyterlab_shutdown
`
Development
For a development install (requires npm version 4 or later), do the following in the repository directory:
`bash
npm install
npm run build
jupyter labextension link .
`
To rebuild the package and the JupyterLab app:
`bash
npm run build
jupyter lab build
``