-Systems, Components and Events now must have proper mixin. Mixins are located in ecs.core module. (i.e. mixin ECS.Component)

-Multithreading support:
 *multithreaded update - updateMT(), function generates jobs to execute
 *added dispatch callback function to dispatch generated jobs (setJobDispachFunc)
 *added getID callback for get thread ID by EntityManager
-added Job structure. Job has one function "execute()".
-calling partial info update (required to multithreading)
-multithreaded removeEntity, addCompoenents, removeComponents. Every thread has own data and remove/change lists.
-multithreaded addEntity (WIP)
-fixed issue with duplicating components
-simpler and faster "findBlockWithFreeSpace" function
-CallDataAllocator, allocator for CallDatas (used for Jobs)
-fixed some bugs/issues

source/ecs/core.d

@@ -0,0 +1,29 @@
+module ecs.core;
+
+public import ecs.manager;
+
+static struct ECS
+{
+	mixin template System(uint jobs_count = 32)
+	{
+		__gshared ushort system_id;
+		EntityManager.Job[] _ecs_jobs;
+
+		void __ecsInitialize()
+		{
+			import std.experimental.allocator.mallocator;
+			import std.experimental.allocator;
+			_ecs_jobs = Mallocator.instance.makeArray!(EntityManager.Job)(jobs_count);
+		}
+	}
+
+	mixin template Component()
+	{
+		__gshared ushort component_id;
+	}
+
+    mixin template Event()
+	{
+		__gshared ushort event_id;
+	}
+}