Rewrite plugin system to update plugins in parallel after each game tick.

Torch.API/IPluginManager.cs

@@ -7,6 +7,7 @@ namespace Torch.API
 {
     public interface IPluginManager : IEnumerable<ITorchPlugin>
     {
-
+        void UpdatePlugins();
+        void LoadPlugins();
     }
 }

Torch.API/ITorchPlugin.cs

@@ -12,7 +12,6 @@ namespace Torch.API
         Guid Id { get; }
         Version Version { get; }
         string Name { get; }
-        bool Enabled { get; set; }
 
         void Init(ITorchBase torchBase);
         void Update();