turns out I need way to look up the project registration from the project list ... who'd a thunk?
git-base method versions and class versions

- git log displayed with commits that only affect the selected
  class or method
- clicking on the commit comment brings up a diff (for methods) or
  a difference browser (for classes) that show the changes to the
  relevant methods/files within the class structure
- TDGitRawHistoryBrowser has become the utility browser as it
  invokes a block on click allowing customization of action ...
  probably ought to replace other browsers with this style of
  operation
- make unregister project available for all projects ...
  convenient when you want to completely change how a project is
  loaded ... unregister, modify @project file, load ... only the
  changed definitions are loaded (if any) but all project list
  structures are updated