The OP was submitted before, by the author, but it failed to catch on: https://news.ycombinator.com/item?id=45169959 https://news.ycombinator.com/item?id=451699

The OP was submitted before, by the author, but it failed to catch on: https://news.ycombinator.com/item?id=45169959 https://news.ycombinator.com/item?id=45169959 I think it will be interesting to HN, so I'm submitting it again.