subcommands ls, info, seed do not support magnet links

[hackergrrl]

According to torrent --help:

Commands:

torrent            <torrent>
torrent seed       <torrent>
torrent info       <torrent>
torrent ls         <torrent>
torrent create     <directory OR file> {-o outfile.torrent}

`<torrent>` above can be a magnet link, a path to .torrent file or `-` for STDIN

However, supplying a magnet link for seed, info, or ls produces errors.