ToDo: What do you need to add to make the Required TestHarness
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- Add message class to create and parse XML request messages
- Add facility to receive messages in a queue.
  - each message triggers a load and run process
  - block on queue if there is no current testing activity
- add AppDomain encapsulation of test processing
  - each test runs in its own AppDomain
- add logger
- build display processing to show test results
- build Client class, that for now, runs in the same process
  - client demonstrates that you meet each of the requirements #2 - #9
  - remember that there can only be one main in a compiled project - put in TestHarness or Client?
- build more interesting tests including test of at least one part of your design