Fix bad serials (#304)

- [X] Fixes bad serial calculations
- [X] Tightens HexStrings

Bumps release version
Updates documentation

Projects/Server.Tests/Network/Packets/Old/Outgoing/ObjectHelpResponseTests.cs

@@ -1,31 +0,0 @@
-using System;
-using System.Buffers;
-using Server.Network;
-using Xunit;
-
-namespace Server.Tests.Network
-{
-    public class ObjectHelpResponseTests
-    {
-        [Fact]
-        public void TestObjectHelpResponse()
-        {
-            Serial s = 0x100;
-            var text = "This is some testing text";
-
-            var data = new ObjectHelpResponse(s, text).Compile();
-
-            var length = 9 + text.Length * 2;
-
-            Span<byte> expectedData = stackalloc byte[length];
-            var pos = 0;
-
-            expectedData.Write(ref pos, (byte)0xB7);     // Packet ID
-            expectedData.Write(ref pos, (ushort)length); // Length
-            expectedData.Write(ref pos, s);
-            expectedData.WriteBigUniNull(ref pos, text);
-
-            AssertThat.Equal(data, expectedData);
-        }
-    }
-}