Improve Instruction-Handling in WorkflowManager.run()

- experiments held in a class constant
- also updated descriptions of instance variables
- also updated the test that failed from the change
Minor Improvements to "harmony" and "key" Modules

Just to make things, you know, actually work.
Add "harmonic function" Experiment to WorkflowManager

Of course, no tests.
Add "Allon, gay, gay" to Help Test the "harmony" Module

It's both straight-forward and complicated at the same time...