Emitter Dispatch Queue QoS should be Background

[arturonaredo]

Hi there,

According to Apple's documentation the QoS of the Emitter should be .background since all the actions performed are in background. Plus, this library also should NEVER compete with the host app QoS.

https://developer.apple.com/documentation/dispatch/dispatchqos/qosclass/background

snowplow-ios-tracker/Sources/Core/Emitter/Emitter.swift

Line 349 in 48a0d06

DispatchQueue.global(qos: .default).async { [weak self] in

Is there any chance you modify that?

Thanks.