Fix-up demystify #3
Description
The current version of the demystify code for demystify-lite breaks a handful of things. Tests don't work for example, and we change a few of the happier paths in the code to be less happy.
Couple of things to think about:
- Fixup tests.
- Fixup code-paths.
- Make config options work differently, i.e. from disk they are incompatible with demystify-lite, but then, they're harder to configure.