Cleanup & Fixes for .NET 5 (#309)

- [X] Fixes several bugs
- [X] Updates more ordinal issues
- [X] Cleans up the code a bit
- [X] Turns classes static that should have been
- [X] Changes TcpServer.Instances to a HashSet

Bumps release version

Projects/UOContent/Engines/ConPVP/Games/BombingRun.cs

@@ -800,7 +800,7 @@ namespace Server.Engines.ConPVP
                 {
                     if (!m_Bomb.m_Flying && m_Bomb.Map != Map.Internal)
                     {
-                        Effects.SendLocationEffect(m_Bomb.GetWorldLocation(), m_Bomb.Map, 0x377A, 16, 10, m_Bomb.Hue, 0);
+                        Effects.SendLocationEffect(m_Bomb.GetWorldLocation(), m_Bomb.Map, 0x377A, 16, 10, m_Bomb.Hue);
                     }
 
                     if (m_Bomb.Location != m_Bomb.m_Game.Controller.BombHome)

Projects/UOContent/Engines/ConPVP/Games/TourneyMatch.cs

@@ -46,7 +46,7 @@ namespace Server.Engines.ConPVP
                     hasAppended = true;
                 }
 
-                sb.Append(".");
+                sb.Append('.');
 
                 part.AddLog(sb.ToString());
             }