Dom.createImg() should allow passing an onload callback.

[brysonian]

I suppose it could be 2nd or 3rd arg. If 2nd is string it is alt attr, if it is a function, onload callback.

[shiffman]

Agreed! Just chiming in to cross-reference this with #561 in case that's relevant to the discussion.

[lmccart]

@futuremarc this seems related to some of the callback stuff we were looking at during the meetup last month, want to take a look if you have time?

[futuremarc]

createImg() actually does take a callback now via PR #745

[lmccart]

oops, missed that, great!