Consider using latest value sets when running tests

[dslmeinte]

The tests currently specify all external data, including the “compressed” value sets, themselves. That prevents the tests from failing when a value set would change in an incompatible way, which would be good to know. To improve on that, we could do either one of the following:

1. Use the latest value sets when evaluating, injecting that into the external part of the rules' logic expressions' input data. That means that the corresponding part of the rules' tests can be removed, mostly leaving validationClock.
2. Keep the value sets specified in the rules' tests, but run the tests a second time with the latest value sets overwriting the specified one.

[dslmeinte]

(see #98)