jorgeehernandez
forked from guilhermesimoes's block: D3.js: Animating Stacked-to-Grouped Bars
https://d3js.org/d3.v3.min.js
https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js
https://code.jquery.com/jquery-3.1.0.min.js