Hey, I looked into the Github release a bit, and I'm not sure it's going anywhere. Chapters 1 and 2 were released 4 years ago, but there doesn't seem to have been any progress beyond. A deeper search into the project might reveal progress elsewhere, but I wouldn't count on getting that second version.
That said, I'm thrilled to have access to the PDF you linked, and I really look forward to reading it. I'm sure it's still valuable in its original form. Thanks for sharing. :)
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