Update parameters passed to onDataSent, onUpdatesEnabled/Disabled, and onConfirmationReceived callbacks.
Deprecate single-callback-registering functions for event handling in lieu of the new EventHandler-based API.
Introduce new GattServer::EventHandler callback functions to replace the deprecated versions.
The ChainableGapEventHandler enables chaining together Gap::EventHandlers so separate parts of an application can be notified of Gap events as needed. The application can register multiple Gap::EventHandler objects to one ChainableGapEventHandler and then set the global Gap::EventHandler to the ChainableGapEventHandler. All registered EventHandlers will then be called when a Gap Event occurs.