Basic update, multithreading emplate support, fixed

-Added possibility to add entity form template + components to replace template data
-basic tests for new functionality
-small performance improvement for events
-added ComponentRef structure which contain data pointer and component ID
-now events are called before entities removing

source/bubel/ecs/entity.d

@@ -114,3 +114,14 @@ export struct EntityTemplate
         return cast(T*)(entity_data.ptr + info.tmpl_deltas[T.component_id]);
     }
 }
+
+/************************************************************************************************************************
+ComponentRef contain component ID and pointer to it. It used to add component data to entity.
+*/
+export struct ComponentRef
+{
+    ///pointer to component
+    void* ptr;
+    ///component index
+    ushort component_id;
+}