* Separate the logic for each state into separate functions
* Start the process of separating out initialization (pre-processing of
parameters that cannot be done via arg spec) from the logic to
implement each state.
* Start the process of raising exceptions for errors and returning
result values from each state implementing function Goal is for all
fail_json's to be consolidated into exception handlers at the toplevel
and for there to be only one exit_json() at the toplevel.
4e2876be9f