A new project, on the Dandi Salt March, is up at keyaar.in/salt
This is an interactive data visualisation of the Salt March. While it resizes somewhat awkwardly on a narrow screen, I wouldn't recommend it. (My biggest gripe still, is the absence of a sensible way to input proper apostrophes and dashes in Windows. Bear with me on this, I am as horrified as you are.)
Thanks to Prof. Venkatesh, Arihant (code-ninja), Prof. Greg Polk and Shri Sethu Das Ji, and their help and support, I only worked on this for five months and not a decade and a half.