Provide events for all lifecycle methods on Component

[p2kmgcl]

Currently there are only some events dispatched during lifecycle methods (willAttach, attached, willDetach, detached and rendered). I think it would be useful (and more consistent) to provide events for all existing lifecycle methods, so components' users can listen for these changes.

I have made a PR (#299) for the disposed lifecycle method, but it would be interesting adding events for the rest of them (created, willReceiveState...).

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Example use case for the disposed event: I am storing a component inside a variable, and setting that variable to null when the component is disposed.

[robframpton]

Fixed by #299