Custom Logger - Request
[issue link]It would be a nice feature if we could pass-in or some how utilize our own custom logger for Nuxt messages. We run Bunyan in production and would like to utilize it within Nuxt. If Nuxt exposed an API for a custom logger, it would be greatly increase visibility into what is happening with Nuxt in production. We are using a custom express server to host our Nuxt site, which gives us some insight into requests, timings and etc., but we have virtually no logs on Nuxt itself.