Remove trailing whitespace line
Export TerminateChildResult record on Supervisor module. fixes #DPP-80
First attempt to supervise Process actions without Closures. #DPP-81

* Add new constructor on childRun's ChildSpec attribute:
  - ChildRun = RunClosure | RunChan

* Add two new functions to create ChildRun records
  - closureChildRun: existing implementation with (Closure (Process ())).
  - processChildRun: supervising (Process ()) without Closure.

* Update tests to include supervision with RunClosure and RunChan (approx. 60% done)