This is Conway's Game of Life with a small bit of interactivity.
An observer can click on a square to "infect" it, which turn its living color into a semi-transparent red.
Then, whenever the infected cell is live, it will in turn infect its living neighbors.
The only cure to the virus is clicks!!!
dist/index.html in a browser and start clickin'.
If you go into the console, there are two global vars exposed so you can go to town.
svgis a d3 selection of the svg element on the page
simis the simulation object. see
src/simulation.jsif you want to use it's (not at all finalized) interface.