Non-Performant: Hits Rate Limits Easily

When I switched to using this in production, I couldn't figure out why it kept causing rate limit issues. Then I saw it works by paging through every page of subscribers, and was attempting to make over 700 API calls in a loop, for a recently added subscriber.

ConvertKitSDK-PHP/src/ConvertKit_API.php

Line 341 in e92084f

public function get_subscriber_id( $email_address ) {

Duplicate, sorry