I had started that work at the end of 2014, but I never got around to finishing it.
The JUnit unit tests pass now, but there are a few quirks. In the past, I could put the concutest-junit-4.7-withrt.jar file as prefix on the boot classpath, but when I do that now, I get a strange NoClassDefFoundError: org.junit.internal.AssumptionViolatedException.
But I’ll continue to work on it. This time. Hopefully.