Public API functions.

Modules
	Session management.
	Changing client principal & credentials.
	Receiving data from topics.
	Creating and removing topics.
	Sending and receiving messages as a client.
	Handling messages from and to clients.
	Authentication services.
	Sending pings and responding to ping request.
	Managing topic subscriptions.
	Maintaining topic state.
	Management of the system authentication store.
	Management of the security store.
	Management of other clients.
	Working with time series topics.
	Receive notifications about changes to selected topics.
	Management of topic views.

Detailed Description