private void MainWindow_DragDrop(object sender, DragEventArgs e)
        {
            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

            if (Orison.Project == null)
            {
                if (files.Length == 1 && Path.GetExtension(files[0]) == ".oep")
                {
                    Orison.LoadProject(files[0]);
                }
            }
            else
            {
                foreach (string file in files)
                {
                    Orison.AddLevel(new Level(Orison.Project, file));
                }
            }
        }
 private void openProjectToolStripMenuItem_Click(object sender, EventArgs e)
 {
     Orison.LoadProject();
 }