Fixed a java deprecation warning

java/py3oconvertor/py3oconverter/Convertor.java

@@ -65,7 +65,9 @@
         java.net.URL before = null;
         try
         {
-            before = newfile.toURL();
+            // use the new toURI API because the direct toURL on a java.io.File
+            // is deprecated
+            before = newfile.toURI().toURL();
         }
         catch (MalformedURLException e) {
             e.printStackTrace();