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 93580ee,1fb2a1b..ed38080
--- 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();
    }