# Functions
NewManager creates a new manager with a specific provider.
NewMemProvider returns an new instance of the memTopics, which is implements the TopicsProvider interface.
Register registers a topics provider.
Unregister unregisters a topics provider.
# Variables
ErrAuthFailure is returned when the user/pass supplied are invalid.
ErrAuthProviderNotFound is returned when the requested provider does not exist.
MaxQosAllowed is the maximum QOS supported by this server.
# Interfaces
Provider defines the interface for topic providers.