Showcase to demonstrate the implementation of backward-compatible APIs and versioning

Run

cd customer-service
mvn package meecrowave:run

to run the sample. After the server is running, you can access the Swagger UI at http://localhost:8080/index.html

The sample was used during a webinar of open knowledge GmbH. The recording (in german) can be found here: https://youtu.be/4y6VJOq9jSY