https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js
https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js
https://gist.github.com/xhinking/9341806.js
https://cdnjs.cloudflare.com/ajax/libs/d3/5.5.0/d3.js
https://d3js.org/d3-time.v1.min.js
https://d3js.org/d3-time-format.v2.min.js
https://cdnjs.cloudflare.com/ajax/libs/crossfilter/1.3.12/crossfilter.js
https://cdnjs.cloudflare.com/ajax/libs/dc/3.0.6/dc.js
https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.3.4/leaflet.js
https://cdnjs.cloudflare.com/ajax/libs/leaflet.markercluster/1.4.1/leaflet.markercluster.js