https://cdnjs.cloudflare.com/ajax/libs/d3/4.3.0/d3.js
https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js
https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.js
https://cdnjs.cloudflare.com/ajax/libs/d3-tip/0.7.1/d3-tip.min.js