export changed to version sbml 3v2

converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/SbmlExporter.java

@@ -31,7 +31,7 @@ public class SbmlExporter {
   public String toXml(lcsb.mapviewer.model.map.model.Model model)
       throws SBMLException, XMLStreamException, InconsistentModelException {
     try {
-      SBMLDocument doc = new SBMLDocument(3, 1);
+      SBMLDocument doc = new SBMLDocument(3, 2);
       Model result = doc.createModel(model.getIdModel());
       result.setName(model.getName());
       Layout layout = createSbmlLayout(model, result);