@pmanrubia 'Core' is our place for all business logic. Inspired by [Uncle Bob's notion of clean architecture](http://blog.8thlight.com/uncle-bob/2012/08/13/the-clean-architecture.html) we are trying to keep our business logic (lib/core) separate from our application logic (app).

At the moment its a working experiment but the mid-long term plan would be to extract it into a  reusable gem that could be used by other interfaces.