adw1n

@axiaoxin recently an example was added that hopefully answers your question: https://github.com/swaggo/swag/blob/3d90fc0a5c6ef9566df81fe34425b0b35b0f651e/example/object-map-example/controller/response.go#L5

I think there is definitely an interest in using tracing with goka. Right now to use https://godoc.org/gopkg.in/DataDog/dd-trace-go.v1/contrib/Shopify/sarama with a producer you need to implement a custom `ProducerBuiler` which involves copy...

@rs would you accept a PR that adds the `Critical` log level?

> you can use WithLevel(zerolog.PanicLevel). Right, so we don't need a new level after all but a helper function similar to `Debug()`, `Info()` etc. would be nice. @rs what are...

Relates to https://github.com/Shopify/sarama/issues/1665 First version that supports headers is `sarama.V0_11_0_0` and MockBroker doesn't work with it.