His original announcement is in this video (starts at around 34:00): https://www.twitch.tv/videos/568019342 ... one of the questions asked in the chat (55:07) is "How?" and he says he's going to answer that in more detail in the future -- tantalizing! I for one would be very interested. He adds, "As a quick summary: I spent a lot of hours on this. I don't even want to admit how many hours I spent on this. Essentially lots of effort, and time, and sweat. No tears though." Kudos!