download with SequentialDownload

[pilsnerbeer]

improvement proposal: there should be a way to toggle sequential download when adding torrent initially from download_from_link , like download_from_link(file, savepath, sequential=True)., like with qbit GUI client. The reason is that there is a delay when adding a torrent to download, so when download_from_link is called followed immediately with toggle_sequential_download, the torrent may not have been initialized yet, so the toggle is simply ignored.