fix lookup crash on component that is only read by renderers

encompass-cs/Collections/ComponentStore.cs

@@ -33,7 +33,7 @@ namespace Encompass
 
         private TypedComponentStore<TComponent> Lookup<TComponent>() where TComponent : struct, IComponent
         {
-            //RegisterComponentType<TComponent>();
+            if (!Stores.ContainsKey(typeof(TComponent))) { RegisterComponentType<TComponent>(); }
             return Stores[typeof(TComponent)] as TypedComponentStore<TComponent>;
         }