Project Structure
As of version 2.0.0 of the project
As you can see from the diagram above (and the repository itself) the general structure of the project can be split in two parts - front-end (dubbed Looney UI on the diagram) and a back-end part. In the back-end part all microservices (Users, Habits and Moods) are included and also the API Gateway.
The microservices are isolated from each other and the only way communication between them and the front-end is via the API Gateway.