Add more details to change events #12
Description
It is desirable to add more details about current resource status when a changeor changeAny event is emitted.
A new data property could be added to the emitted object in the case of changeAny event. This property should contain current values of loading, error and value.
For change events, that currently are emitting only the method name, this should be replaced by an object containing method and data properties, but this change implies a breaking change in the event interface, and this fact has to be taked into account before making the change ¿Does it really improve the interface enough to assume the risk of a breaking change?