New producer configs have been added somewhat haphazardly. Before we consider the producer final, let's do the following:
1. Go back and think about all the config names and make sure they are really what we want.
2. Add doc strings for all the configs
3. Make the config keys non-public.
4. Add a feature to differentiate important from non-important configs.
5. Add code to generate the website documentation off the internal config docs.