Template allocation update and some tests

-test runner support before/after everty test callback funcion
-added some basic tests for template allocation
-added function to allocate new template from different template and list of addition and removed components

tests/runner.d

@@ -130,6 +130,7 @@ struct TestRunner(Args...)
         {
             TestSuite* suite = &suites[i];
             suite.name = module_.stringof;
+            static if(__traits(hasMember, module_, "beforeEveryTest"))module_.beforeEveryTest();
             foreach (index, unittest_; __traits(getUnitTests, module_))
             {
                 enum attributes = __traits(getAttributes, unittest_);
@@ -161,6 +162,7 @@ struct TestRunner(Args...)
             }
             passed += suite.passed;
             failed += suite.failed;
+            static if(__traits(hasMember, module_, "afterEveryTest"))module_.afterEveryTest();
         }
     }