Package app implements a cross-platform G3N app.
const OnExit = "app.OnExit"
OnExit is the event generated by Application when the user tries to close the window (desktop) or the Exit() method is called.
App returns the Application singleton, creating it the first time.
Exit requests to terminate the application Application will dispatch OnQuit events to registered subscribers which can cancel the process by calling CancelDispatch().
KeyState returns the application's KeyState.
Renderer returns the application's renderer.
Run starts the update loop. It calls the user-provided update function every frame.
RunTime returns the elapsed duration since the call to Run().