A new version of my review article on emergence

On the arXiv, I have posted a new version of my review article, Emergence: from physics to biology, sociology, and computer science.I have added expanded sections on molecular structure, quantitative measures of causal emergence, and biological evolution.There are also many minor additions and corrections. I hope the hyperlinked Table of Contents is helpful.I welcome feedback and suggestions. I am sure there is much more to do.