# Functions
DefaultConfig returns a default configuration for the client.
NewClient returns a new client for the given configuration.
# Variables
ErrKeyMissing is returned when the API key is required, but not present.
ErrSecretMissing is returned when the API secret is required, but not present.
# Structs
Client is the client to the ConvertKit API.
Config is used to configure the creation of the client.
Subscriber describes a ConvertKit subscriber.
SubscriberQuery parameterizes what subscriber data to request.