Looking only at the JS part of this boilerplate and the amount of dependencies I think to myself: "this cannot be right". It reminds me of my early Java days with bad system frameworks which needs a tremendous amount of boilerplate to get running. Maybe it's the right way to go for big production systems, nevertheless... don't like it much. But on the other hand it looks pretty complete regarding tests and there is not much to add.
My apologies if you have street cred in the field, but I don't know you, so have no reason to trust your recommendation. Please tell me what makes this particular project better than any alternatives.
No street card to offer --- just a developer passing on some knowledge. I've been using Django for the past two years and React + Redux for the past year. I've scoured around for boilerplates and that's the one that worked for me the best. YMMV