Hacker News on 18 October 2019

• My Favourite Git Commit
• Coffee Is Hard
• Four kinds of documentation
• Earth and Sun
• New pathfinding algorithm
• Bazel 1.0
• Mathematics for Machine Learning [pdf]
• Are Aerospike Engines Better Than Traditional Rocket Engines?
• Alphabet’s Wing begins making commercial drone deliveries in the US
• Faster Layouts with CSS Grid and Subgrid