More D3 map resources

https://medium.com/@andybarefoot/making-a-map-using-d3-js-8aa3637304ee

https://observablehq.com/@d3/cylindrical-stereographic

http://bl.ocks.org/micahstubbs/8e15870eb432a21f0bc4d3d527b2d14f

https://bl.ocks.org/ChumaA/385a269db46ae56444772b62f1ae82bf

https://medium.com/@mbostock/command-line-cartography-part-1-897aa8f8ca2c

This was particularly good:
https://medium.com/@amy.degenaro/introduction-to-digital-cartography-geojson-and-d3-js-c27f066aa84

https://codepen.io/brennanpincardiff/pen/Rdyprp

https://codepen.io/brennanpincardiff/pen/zbjZGg

https://github.com/brennanpincardiff/rhiwbina_codeclub_javascript/blob/master/world.md