A couple of Brad Myers's students at CMU worked out a concept for lightweight versioning, with a particular focus on users of code notebooks. https://www.youtu

A couple of Brad Myers's students at CMU worked out a concept for lightweight versioning, with a particular focus on users of code notebooks. https://www.youtube.com/watch?v=rBrvT7vGleM https://www.youtube.com/watch?v=rBrvT7vGleM Unfortunately, they moved on to an evolution of the initial concept that's a lot less compelling/promising.