Why log a 'warn' when a handler throws an exception?

[ryanhallcs]

The readme correctly asserts the logger issues a log of a thrown error with the level warn (also see: https://github.com/pinojs/hapi-pino/blob/master/index.js#L81-L87)

I'm wondering the reason behind this, because I need to discern which logs to transport for proper error processing (i.e. needing to send to a system like Sentry or Raygun, or even simple log filtering for errors by level) - and lowering that threshold to warn doesn't sound correct to me. Curious if I'm misunderstanding something

[mcollina]

I don’t remember. There might be a rationale, but it has been lost in the years.
Would you like to send a PR?

[ryanhallcs]

@mcollina - I know how that goes :) pr submitted