Changes to img source value in lazy-img attribute not being picked up

[kiwikoda]

After first assigning an image source to the lazy-img attribute, subsequent changes to the attribute value are not picked up.

I think this used to work and would be a good feature.

Reversing change e33b011 (i.e. removing the deregister() call that was added inside the attribute observer) fixes the issue.

[craig-o-curtis]

I'm having the same issue -- Using $onChanges lifecycle, changes recognized but $rootScope.$emit('lazyImg:refresh'); doesn't cause repopulation of src attribute.