Merge der überarbeiteten Compose-Konfiguration ('rebalance-listener')

diff --cc docker-compose.yml
Simple merge

diff --cc pom.xml
Simple merge

diff --cc src/main/java/de/juplo/kafka/DriverController.java
index 93580eeb89aefe97dadea7c48d9334a44c1a2140,1fb2a1b5827083646e280418ef8b22c80f87b9fd..ed3808068ffd3706dd57b4d5b7e45f1c260fdae6
--- 1/src/main/java/de/juplo/kafka/DriverController.java
--- 2/src/main/java/de/juplo/kafka/DriverController.java
+++ b/src/main/java/de/juplo/kafka/DriverController.java
@@@ -31,8 -31,9 +31,9 @@@ public class DriverControlle
      consumer.stop();
    }
  
+ 
    @GetMapping("seen")
 -  public Map<Integer, Map<String, Integer>> seen()
 +  public Map<Integer, Map<String, Long>> seen()
    {
      return consumer.getSeen();
    }