danharr
https://d3js.org/d3.v4.min.js
https://code.jquery.com/jquery-3.2.1.slim.min.js
https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js
https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js