update() should trigger callbacks

[mchccc]

As the title says, I think that a call to the update() function should trigger most of the callbacks available.. What do you think?

[drewish]

Yeah I agree. I'm banging my head against the fact that events don't fire if you assign a selection in the initial imgAreaSelect() call. I was hoping I could just call update() afterwards and force it.

[acrispino]

This would also be very convenient.

Similarly it would be nice to also trigger callbacks if initial selection dimensions are given to imgAreaSelect()

[tonytopper]

Yeah, I am currently searching for a graceful way to trigger onSelectChange when I call setSelection from an instance of imgAreaSelect. My expectation was that calling setSelection would do this.