flyTo() events now firing only when appropiate.

[IvanSanchez]

Should fix #3134, even if the code is a tiny bit hackish IMHO.

[mourner]

Thanks! I rewrote the confusing logic in _resetView in #3278, I guess we need to coordinate the changes before I can merge this. Can you look at that PR and see if those changes make sense?

[IvanSanchez]

Let me rebase this into events-refactor and see how much stuff breaks down.

[mourner]

@IvanSanchez it will probably be easier to review the changes before rebasing, the latter would get confusing without background.

[IvanSanchez]

Not needed once #3278 gets merged, events are fired as expected in the events-refactor branch.