Add automatic versioning and server configuration XML in preparation for services

Torch.API/IPluginManager.cs

@@ -9,6 +9,6 @@ namespace Torch.API
     {
         void UpdatePlugins();
         void Init();
-        void UnloadPlugins();
+        void DisposePlugins();
     }
 }

Torch.API/ITorchBase.cs

@@ -8,10 +8,13 @@ namespace Torch.API
 {
     public interface ITorchBase
     {
+        event Action SessionLoading;
         event Action SessionLoaded;
+        event Action SessionUnloading;
+        event Action SessionUnloaded;
         IMultiplayer Multiplayer { get; }
         IPluginManager Plugins { get; }
-        Version Version { get; }
+        Version TorchVersion { get; }
         void Invoke(Action action);
         void InvokeBlocking(Action action);
         Task InvokeAsync(Action action);

Torch.API/ITorchPlugin.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace Torch.API
 {
-    public interface ITorchPlugin
+    public interface ITorchPlugin : IDisposable
     {
         Guid Id { get; }
         Version Version { get; }
@@ -23,10 +23,5 @@ namespace Torch.API
         /// Called after each game tick. Not thread safe, use invocation methods in <see cref="ITorchBase"/>.
         /// </summary>
         void Update();
-
-        /// <summary>
-        /// Called when the game exits.
-        /// </summary>
-        void Unload();
     }
 }