- Always create self.handler on-demand in the test cases. (clumens)
    - Also set the seen attribute when __call__ is used. (clumens)
    - Mark the upgrade command as deprecated. (clumens)
    - Add the method test case back in. (clumens)
    - Set the seen attribute when parsing in test cases, too. (clumens)
    - Add a proxy method command object. (clumens)
    - Add an interactive kickstart shell command, ksshell. (clumens)
    - Fix string substitution errors in translatable text. (clumens)
    - Break the method command out into individual commands. (clumens)