Fix and change Torrent.Pieces to be byte[]

Author: Krusen

BencodeNET/Parsing/TorrentParser.cs

@@ -62,7 +62,7 @@ protected Torrent CreateTorrent(BDictionary data)
             {
                 IsPrivate = info.Get<BNumber>(TorrentInfoFields.Private) == 1,
                 PieceSize = info.Get<BNumber>(TorrentInfoFields.PieceLength),
-                Pieces = info.Get<BString>(TorrentInfoFields.Pieces)?.ToString(),
+                Pieces = info.Get<BString>(TorrentInfoFields.Pieces)?.Value.ToArray() ?? new byte[0],
 
                 Comment = data.Get<BString>(TorrentFields.Comment)?.ToString(),
                 CreatedBy = data.Get<BString>(TorrentFields.CreatedBy)?.ToString(),

BencodeNET/Torrents/Torrent.cs

@@ -129,7 +129,7 @@ public virtual string DisplayName
         /// <summary>
         /// A concatenation of all 20-byte SHA1 hash values (one for each piece).
         /// </summary>
-        public virtual string Pieces { get; set; }
+        public virtual byte[] Pieces { get; set; }
 
         /// <summary>
         /// [optional] If set to true clients must only publish it's presence to the defined trackers.