v6.0.0

WIP

All Modules

Improved error codes & handling for all Firebase services;
- Standardised native error to JS conversion
- Native promise rejection errors now contain additional properties to aid debugging
All native events are now queued natively until a JS listener is registered. This fixes several race conditions for events like onMessage, onNotification, onLink etc where the event would trigger before JS was ready.

Added appConfig & method support for setAutomaticDataCollectionEnabled & automaticResourceManagement
Added app options support for gaTrackingId
The [DEFAULT] Firebase app can now be safely initialised in JS, however this has some caveats;
- Firebase services such as Performance Monitoring & Remote Config require the default app to be initialised through the plist/json file.
Waiting for apps to init via .onReady() has been removed. initializeApp() now returns a promise to the same effect
Trying to initialise the [DEFAULT] Firebase app in JS when it was already initialised natively will now throw an error (formerly warned)

Added support for resetAnalyticsData() - this is useful for opt-in first analytics/data collection flows
setUserProperties now iterates properties natively (formerly 1 native call per property)

Fixed an issue where useFunctionsEmulator does not persist natively (Firebase Native SDKs require chaining this method before other calls and does not modify the instance)

Instance Id now supports multiple Firebase apps, e.g. firebase.app('fooApp').iid().get()
Support preventing auto initialization via setAutoInitEnabled(enabled: boolean) - this is useful for opt-in first analytics/data collection flows