Added functionality

lib
- Save
- DoAction
- ApplyDataset
- GetLayer(s)

main
- do actions from commandline

Improved test cases!

scripts/applyDataset.jsx

@@ -0,0 +1,15 @@
+var saveFile = File(arguments[0]);
+if(saveFile.exists)
+    saveFile.remove();
+var idAply = charIDToTypeID("Aply");
+var desc1 = new ActionDescriptor();
+var idnull = charIDToTypeID("null");
+var ref1 = new ActionReference();
+var iddataSetClass = stringIDToTypeID("dataSetClass");
+ref1.putName(iddataSetClass, arguments[1]);
+desc1.putReference(idnull, ref1);
+executeAction(idAply, desc1, DialogModes.NO);
+saveFile.encoding = "UTF8";
+saveFile.open("e", "TEXT", "????");
+saveFile.writeln("done!");
+saveFile.close();