One of my first PRs ever was to that project, back in 2013. Then it was a nice starter project, showing how one could move away from the clunky server side rendering frameworks at the time, instead using AngularJS on the frontend and having a backend. And also included a nice simple Spring setup, before Spring Boot existed. So pretty hip, and very lean.

Since then it has.. evolved to something quite big, I feel, where one quickly end up with lots of unknown boilerplate in one's project. I mean, it's probably useful in its own way, almost like a Django alternative or something with batteries included. But not very hipster anymore.