Initializing Source property for created INbtObjects

SubstrateCS/Source/Entity.cs

@@ -112,6 +112,8 @@ namespace Substrate
             _pos = new Vector3();
             _motion = new Vector3();
             _rotation = new Orientation();
+
+            _source = new TagNodeCompound();
         }
 
         /// <summary>

SubstrateCS/Source/Item.cs

@@ -37,6 +37,7 @@ namespace Substrate
         public Item ()
         {
             _enchantments = new List<Enchantment>();
+            _source = new TagNodeCompound();
         }
 
         /// <summary>

SubstrateCS/Source/Level.cs

@@ -277,6 +277,8 @@ namespace Substrate
 
             GameType = GameType.SURVIVAL;
             UseMapFeatures = true;
+
+            _source = new TagNodeCompound();
         }
 
         /// <summary>

SubstrateCS/Source/TileEntity.cs

@@ -75,6 +75,7 @@ namespace Substrate
         /// </summary>
         protected TileEntity ()
         {
+            _source = new TagNodeCompound();
         }
 
         /// <summary>
@@ -84,6 +85,7 @@ namespace Substrate
         public TileEntity (string id)
         {
             _id = id;
+            _source = new TagNodeCompound();
         }
 
         /// <summary>