Previous discussion:<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627472" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627472</a> (9 comments)<p>Other submissions:<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627402" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627402</a><p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627369" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627369</a><p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627329" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627329</a><p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627328" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10627328</a>