Duplicate of https://news.ycombinator.com/item?id=23269835 https://news.ycombinator.com/item?id=23269835 and https://news.ycombinator.com/item?id=23278106 https

Duplicate of https://news.ycombinator.com/item?id=23269835 https://news.ycombinator.com/item?id=23269835 and https://news.ycombinator.com/item?id=23278106 https://news.ycombinator.com/item?id=23278106