Fix bad serials (#304)

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

Bumps release version
Updates documentation

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

@@ -1,34 +0,0 @@
-using System;
-using System.Buffers;
-using Server.HuePickers;
-using Server.Network;
-using Xunit;
-
-namespace Server.Tests.Network
-{
-    public class DisplayHuePickerTests
-    {
-        [Fact]
-        public void TestDisplayHuePicker()
-        {
-            const ushort itemID = 0xFF01;
-            var huePicker = new HuePicker(itemID);
-
-            var data = new DisplayHuePicker(huePicker).Compile();
-
-            Span<byte> expectedData = stackalloc byte[9];
-            var pos = 0;
-
-            expectedData.Write(ref pos, (byte)0x95);
-            expectedData.Write(ref pos, huePicker.Serial);
-#if NO_LOCAL_INIT
-            expectedData.Write(ref pos, (ushort)0);
-#else
-            pos += 2;
-#endif
-            expectedData.Write(ref pos, itemID);
-
-            AssertThat.Equal(data, expectedData);
-        }
-    }
-}