Author here (along with my brother @sebobo). Let me know if you have any questions.
This plugin was extracted from the Wookmark site after lots of people started asking for this functionality. The main difference from Masonry/Isotope is that Wookmark is simpler and faster to set up. The other plugins are very powerful, but can get be a bit confusing at times, especially for people starting out with web development.
Does it support drag-drop features like packery or do you plan to support this?