Duplicates https://news.ycombinator.com/item?id=45963780 https://news.ycombinator.com/item?id=45963780 and https://news.ycombinator.com/item?id=45963949 https:/

Duplicates https://news.ycombinator.com/item?id=45963780 https://news.ycombinator.com/item?id=45963780 and https://news.ycombinator.com/item?id=45963949 https://news.ycombinator.com/item?id=45963949 .