github repos are read only ... don't enable `save` menu item
get unloaded projects functional (get and load)

- readjust enabled menu item algorithm
- move handful of methods form TDMetacelloRegistrationDefinition to TDMetacelloProjectRegistrationDefinition
`inspect` added, `save` configuration functional

- add back `inspect` command ... too useful to lose
- add `browse classes` menu item to project list
  might want to include the configuration, too?
- use --porcelain option for `git status` menu item
  in project browser
- configuration-based `save` appears to be working;
  dirty packages saved and configuration updated and
  saved ... need to work out scheme for opening
  a new version for development since registration
  needs to be updated ...
- --config option added to `project commit` command
  to control whether or not the configuration is
  updated/saved after saving packages
fiddle with project list menu ...
baseline/configuration specific menu items in project list

- permit bulk enable/disable
implement `create new version` and `edit project file` in `project browser`

- start on `switch version` ... which should end
  in `project register` command
create TDMetacelloTool>>projectRegisterConfiguration:version: and rename TDMetacelloTool>>projectCreateConfigurationDevelopmentVersion:spec:version:from: