These examples use Go code to create examples similar to the official C3 JS samples.
- https://c3js.org/samples/data_label.html
- https://c3js.org/samples/data_label_format.html
- https://c3js.org/samples/categorized.html (Supported)
- https://c3js.org/samples/grid_y_lines.html (Not Supported)
- https://codepen.io/rjlinden/pen/AzvJq
- https://blog.trifork.com/2014/07/29/creating-charts-with-c3-js/
- c3js/c3#2084