previously posted on this forum in two places, here https://news.ycombinator.com/item?id=23283826 https://news.ycombinator.com/item?id=23283826 and here http

previously posted on this forum in two places, here https://news.ycombinator.com/item?id=23283826 https://news.ycombinator.com/item?id=23283826 and here https://news.ycombinator.com/item?id=23279943 https://news.ycombinator.com/item?id=23279943