Previously submitted twice with no comments each time (but I think it is a cool article as well): https://news.ycombinator.com/item?id=7385399 https://news.yco

Previously submitted twice with no comments each time (but I think it is a cool article as well): https://news.ycombinator.com/item?id=7385399 https://news.ycombinator.com/item?id=7385399 https://news.ycombinator.com/item?id=5462445 https://news.ycombinator.com/item?id=5462445