Change event is thrown when no change has occurred

[ScottHamper]

The default behavior for browsers is to only trigger a change event on a <select> element when the selected value has changed. Expanding the drop down and re-selecting the currently selected item should not trigger a change event. However, Selectize will always trigger a change event when an item is chosen, regardless of whether or not it is the currently selected item.

Here is an example failing test case (events_dom.js):

describe('DOM Events', function() {
    describe('"change"', function() {
            it('should not be triggered when the selected item has not changed', function(done) {
            var test = setup_test('<select><option value="a" selected="selected">a</option></select>');

            var counter = 0;
            test.$select.on('change', function() { counter++; });

            Syn.click(test.selectize.$control).delay(0, function() {
                Syn
                    .click($('[data-value="a"]', test.selectize.$dropdown))
                    .delay(0, function() {
                        expect(counter).to.be.equal(0);
                        done();
                    });
            });
        });
    });
});