How to set the correlation ID?

[clalos]

Hello,
first of all thanks for the amazing work. I can't find a way to set the correlation ID of the underlying amqp.Publishing struct. It seems not supported by the configuration.

// Letter contains the message body and address of where things are going.
type Letter struct {
	LetterID   uuid.UUID
	RetryCount uint32
	Body       []byte
	Envelope   *Envelope
}

// Envelope contains all the address details of where a letter is going.
type Envelope struct {
	Exchange     string
	RoutingKey   string
	ContentType  string
	Mandatory    bool
	Immediate    bool
	Headers      amqp.Table
	DeliveryMode uint8
	Priority     uint8
}

--- Update
It would be nice to set the amqp.Publishing.Type as well.

[houseofcat]

This was solved in release v2.1.4

Envelope struct supports two new fields CorrelationID and Type and are mapped to Publishing methods.

Details:
#27