We need to decide what options are allowed in the JSON config file and implement that.

For example:

1. Options NOT in the JSON config file

• fastsync
• repair
• help
• config
• dur
• nodur
• nojournal

2. Options renamed in the JSON config file

• journal -> journal.enabled

As part of this, we hope to generate all of this in JSON format and use that as the source of truth for both the docs and unittest generation. Hopefully once the code is fully declarative, either this won't be needed or the code itself could be automatically generated.