fixed UTF-8 encoding for output XML

mustang/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>com.github.rayman2200</groupId>
         <artifactId>mustang-sample-project</artifactId>
-        <version>1.2.1-SNAPSHOT</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <groupId>org.mustangproject.ZUGFeRD</groupId>

mustang/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java

@@ -72,7 +72,7 @@ public class ZUGFeRDExporter {
         jaxbContext = JAXBContext.newInstance("org.mustangproject.ZUGFeRD.model");
         marshaller = jaxbContext.createMarshaller();
         marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
-        marshaller.setProperty("jaxb.encoding", "UTF-8");
+        marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
     }
 
     private class LineCalc {
@@ -749,7 +749,7 @@ public class ZUGFeRDExporter {
             // create a dummy file stream, this would probably normally be a
             // FileInputStream
 
-            byte[] zugferdRaw = getZugferdXMLForTransaction(trans).getBytes("UTF-8"); //$NON-NLS-1$
+            byte[] zugferdRaw = getZugferdXMLForTransaction(trans).getBytes(); //$NON-NLS-1$
 
             if ((zugferdRaw[0] == (byte) 0xEF) && (zugferdRaw[1] == (byte) 0xBB) && (zugferdRaw[2] == (byte) 0xBF)) {
                 // I don't like BOMs, lets remove it