Audio Id3v2 Add Support For EncodedBy

src/TaglibSharp.Tests/TaggingFormats/Id3V2Test.cs

@@ -1024,6 +1024,35 @@ public void TestPublisher ()
 			}
 		}
 
+
+		[Test]
+		public void TestEncodedBy ()
+		{
+			Tag tag = new Tag ();
+			for (byte version = 2; version <= 4; version++) {
+				tag.Version = version;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Initial (IsEmpty): " + m);
+					Assert.IsNull (t.EncodedBy, "Initial (Null): " + m);
+				});
+
+				tag.EncodedBy = val_sing;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsFalse (t.IsEmpty, "Value Set (!IsEmpty): " + m);
+					Assert.AreEqual (val_sing, t.EncodedBy, "Value Set (!Null): " + m);
+				});
+
+				tag.EncodedBy = string.Empty;
+
+				TagTestWithSave (ref tag, delegate (Tag t, string m) {
+					Assert.IsTrue (t.IsEmpty, "Value Cleared (IsEmpty): " + m);
+					Assert.IsNull (t.EncodedBy, "Value Cleared (Null): " + m);
+				});
+			}
+		}
+
 		[Test]
 		public void TestISRC ()
 		{

src/TaglibSharp/Id3v2/FrameTypes.cs

@@ -101,6 +101,7 @@ static class FrameType
 		public static readonly ReadOnlyByteVector WPUB = "WPUB";
 		public static readonly ReadOnlyByteVector WXXX = "WXXX";
 		public static readonly ReadOnlyByteVector ETCO = "ETCO";
+		public static readonly ReadOnlyByteVector TENC = "TENC"; // Encoded By Frame.
 		public static readonly ReadOnlyByteVector MVNM = "MVNM"; // Movement Name
 		public static readonly ReadOnlyByteVector MVIN = "MVIN"; // Movement Number/Count
 	}

src/TaglibSharp/Id3v2/Tag.cs

@@ -2299,6 +2299,20 @@ public override string Publisher {
 			set { SetTextFrame (FrameType.TPUB, value); }
 		}
 
+		/// <summary>
+		///    Gets and sets the TENC (Encoded by) of the song.
+		/// </summary>
+		/// <value>
+		///    A <see cref="string" /> object containing the TENC of the song.
+		/// </value>
+		/// <remarks>
+		///    This property is implemented using the "TENC" field.
+		/// </remarks>
+		public string EncodedBy {
+			get { return GetTextAsString (FrameType.TENC); }
+			set { SetTextFrame (FrameType.TENC, value); }
+		}
+
 		/// <summary>
 		///    Gets and sets the ISRC (International Standard Recording Code) of the song.
 		/// </summary>