With more comments on duplicates at https://news.ycombinator.com/item?id=44307057 https://news.ycombinator.com/item?id=44307057 , https://news.ycombinator.com/i

With more comments on duplicates at https://news.ycombinator.com/item?id=44307057 https://news.ycombinator.com/item?id=44307057 , https://news.ycombinator.com/item?id=44252489 https://news.ycombinator.com/item?id=44252489 , and https://news.ycombinator.com/item?id=44296711 https://news.ycombinator.com/item?id=44296711 .