NewSSEClient creates an object for stream interactions.

ErrStreamDisconnect is a stream disconnect error.

Event defines the structure of an event that gets sent to a EventStreamListener.

Message is basic object for marshalling data from ff stream.

SSEClient is Server Send Event object.

Connection is simple interface for streams.

EventStreamListener provides a way to hook in to the SSE Events that the SDK recieves from the FeatureFlags server and forward them on to another type.