Add test.sh for comparing against historical recorded runs.
I have not done any extra analysis on cases recorded here. Rather,
I just want to know when/if any of this output changes.
I couldn't figure out a good way to include these tests within the
"go test" framework. The tricky bit was figuring out how to set
unmentioned flags back to their default values between runs. I
deemed adding an 'option' object of some kind built from command
line flags but also buildable by tests to not be worth the complexity
at this time.