NewHub returns a new WsHub instance and the handler that accepts and upgrades connections to WebSockets.

CloseEvent is an event emitted whenever a new client line closes.

ConnectedEvent is an event emitted whenever a new client joins.

ErrRoomNotFound is obivous.

Client represents a single client connection.

ErrorData is the form Data from Message takes when replying erronous responses.

Hub is the what manages the websockets and provides room functionality.

Message struct codifes the format for sending messages.

ListenerFn is the interface for event listeners.