Crop like Instagram

[SergejSi]

Hey @zhanziyang, thank you for the package and the continuous maintain.

I found a comparable cropper avidofood.github.io/vue-cropgram
that seems to be based on vue-croppa. The approach is taken from Instagram and makes that in my eyes very user friendly.

Maybe you can adopt some approaches (e.g. the solution with the white spacing, initial image size etc.) . I think this would also enhance the cropping experience of your vue-croppa.