Fixed compile issues

test/include/components.h

@@ -1,4 +1,5 @@
 #pragma once
+#include <string>
 #include "ecs.h"
 
 struct Position : ecs::Component {

test/src/main.cpp

@@ -2,8 +2,6 @@
 #include "ecs-lua.h"
 #include "ecs-serial.h"
 
-#include <bits/stdint-intn.h>
-#include <bits/stdint-uintn.h>
 #include <cstddef>
 #include <iostream>
 #include <fstream>
@@ -145,6 +143,9 @@ int main(int argc, const char** argv) {
 
 			// Load entities from disk as a test
 			std::ifstream file("entities", std::ios::in);
+			if (!file.is_open()) {
+				std::cerr << "Failed to open: 'entities'!\n";
+			}
 
 			ecs::serial::deserialize_ids(file);