I think many of these answers can be found quite easily, and others aren’t really as applicable to a project like TensorFlow. I think you might have a better time studying a more typical open source project such as curl.
I’m really sorry but I just don’t have time to go through the questions in detail, we tend to receive questionnaires like this on a relatively frequent basis.
If anyone wanted to work on a “History of TensorFlow” doc, I would definitely be up for contributing and getting answers for that, so we would be able to have something definitive.