updated entt.hpp

src/entt/entt.hpp

@@ -4,4 +4,9 @@
 #include "entity/sparse_set.hpp"
 #include "entity/traits.hpp"
 #include "entity/view.hpp"
+#include "locator/locator.hpp"
+#include "signal/bus.hpp"
+#include "signal/delegate.hpp"
+#include "signal/emitter.hpp"
 #include "signal/sigh.hpp"
+#include "signal/signal.hpp"