this is an important point actually, this file is a scheme that the user can either use or not. we could provide a couple, e.g. with or without date. You import it into `config.yml`. I think this is good IF the configuration merges properly, i.e. the user can specify additional auto mappings without breaking the imported mappings.

I put it in the "routing" directory, because although its not a typical "route" file, it is very much a "routing" thing, and serves a similar purpose to a typical route file.