Is there a way of listing all the DoIts which have been done in a session in Pharo or Squeak as well as which workspaces they were done in?
Are the contents of workspaces also tracked, so they can be diffed?
There's a file in the same directory as your image and with the same name as your image but with the extension ".changes". This file contains all the source code and all the doit's you've performed. Workspace text isn't tracked unless you execute it in which case it appears in the .changes file.