Attention animations not fire complete and allDone event

[weituotian]

it is not work

$imgWraper.snabbt('attention',{
                    position: [50, 0, 0],
                    springConstant: 2.4,
                    springDeceleration: 0.9,
                    complete: function (index, total) {
                        console.log(index, total);
                    },
                    allDone: function() {
                        console.log(index, total);
                    }
                });

if do not use 'attention', it works!

$imgWraper.snabbt({
                    position: [50, 0, 0],
                    springConstant: 2.4,
                    springDeceleration: 0.9,
                    complete: function (index, total) {
                        console.log(index, total);
                    },
                    allDone: function() {
                        console.log(index, total);
                    }
                });