Incremented version number to 0.3.7

When saving files an older version number is used if that version of MSE would be able to open the set

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1011 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/format/clipboard.cpp

@@ -23,7 +23,7 @@
 template <typename T>
 String serialize_for_clipboard(Package& package, T& object) {
 	shared_ptr<wxStringOutputStream> stream( new wxStringOutputStream );
-	Writer writer(stream);
+	Writer writer(stream, file_version_clipboard);
 	WITH_DYNAMIC_ARG(clipboard_package, &package);
 		writer.handle(object);
 	return stream->GetString();