new test, always set a version=xmlProvider

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA1.java

@@ -77,6 +77,7 @@ public class ZUGFeRDExporterFromA1 extends ZUGFeRDExporterFromA3 implements IZUG
 
 	public ZUGFeRDExporterFromA1() {
 		ensurePDFisUpgraded = true;
+		setZUGFeRDVersion(ZUGFeRDExporterFromA3.DefaultZUGFeRDVersion);
 
 	}
 

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3.java

@@ -199,7 +199,7 @@ public class ZUGFeRDExporterFromA3 extends XRExporter implements IZUGFeRDExporte
 	}
 
 	public ZUGFeRDExporterFromA3() {
-
+		super();
 		ensurePDFisUpgraded = false;
 	}