Quick (and possibly dumb) question... I've just bumped Jackdaw versions from 0.7.6 to 0.9.3 for a kafka streams application I'm working on, and stream processing doesn't seem to work. The application is started, but the stuff coming into it does not get processed, and the logging I have on the actual stream processing functions doesn't output anything, so it'd seem that nothing is actually running. Am I missing some obvious breaking change?