Namespacing config options

[beauby]

As more and more config options become available, some of which being relevant only to certain adapters, it would make sense to namespace them. I'm opening this issue to have a place to discuss it.

[joaomdmoura]

Thank you for opening this @beauby, indeed there are quite some new config option on the 0.10.x version.
Could you point out on the issue what are the ones that would be affected?