To use, please open Google Chrome 57 or later. Go to chrome://flags and enable "Experimental JavaScript."

You also need Docker. Clone this repository to a local folder, change into it, and execute:

docker-compose build
docker-compose up

Now open 0.0.0.0:3000 in Chrome. be sure to open a 0.0.0.0:3000/stimulus.html window too. Try scrolling to the bottom and hitting start.