Implement IDisposable on RegionHandler

TShockAPI/RegionHandler.cs

@@ -26,7 +26,7 @@ namespace TShockAPI
 	/// Represents TShock's Region subsystem. This subsystem is in charge of executing region related logic, such as
 	/// setting temp points or invoking region events.
 	/// </summary>
-	internal sealed class RegionHandler
+	internal sealed class RegionHandler : IDisposable
 	{
 		private readonly RegionManager _regionManager;
 
@@ -43,6 +43,16 @@ namespace TShockAPI
 			GetDataHandlers.TileEdit += OnTileEdit;
 		}
 
+		/// <summary>
+		/// Disposes the region handler.
+		/// </summary>
+		public void Dispose()
+		{
+			GetDataHandlers.GemLockToggle -= OnGemLockToggle;
+			GetDataHandlers.PlayerUpdate -= OnPlayerUpdate;
+			GetDataHandlers.TileEdit -= OnTileEdit;
+		}
+
 		private void OnGemLockToggle(object sender, GetDataHandlers.GemLockToggleEventArgs e)
 		{
 			if (TShock.Config.RegionProtectGemLocks)

TShockAPI/TShock.cs

@@ -436,6 +436,8 @@ namespace TShockAPI
 
 				RestApi.Dispose();
 				Log.Dispose();
+
+				RegionSystem.Dispose();
 			}
 			base.Dispose(disposing);
 		}