from the likes of `WError` or `VError` error classes from [verror](https://github.com/davepacheco/node-verror) and [restify v2.0](https://github.com/mcavage/node-restify).
…es' field that isn't a response object, but a string.
…is an object instead of a string. See issue#38 for the same with `req.body`.
…t of the `bunyan` CLI.
…is an object instead of a string.
…number to its log level number value
…R is a node.js Buffer object, doesn't blow up.