Modified http://d3js.org/d3.v3.min.js to a secure url
Updated missing url https://raw.github.com/mbostock/d3/master/lib/colorbrewer/colorbrewer.js to https://cdn.jsdelivr.net/npm/d3@12.10.3/colorbrewer.js
https://d3js.org/d3.v3.min.js
https://raw.github.com/mbostock/d3/master/lib/colorbrewer/colorbrewer.js