turned SwissTimingFormatException into an IOException to avoid aborts

java/com.sap.sailing.domain.swisstimingadapter/src/com/sap/sailing/domain/swisstimingadapter/SwissTimingFormatException.java

@@ -1,6 +1,8 @@
 package com.sap.sailing.domain.swisstimingadapter;
 
-public class SwissTimingFormatException extends RuntimeException {
+import java.io.IOException;
+
+public class SwissTimingFormatException extends IOException {
     private static final long serialVersionUID = -1210353206288437237L;
     
     private final byte[] swissTimingMessage;