heavily simplified imports and using directives

headers/Customer.h

@@ -1,15 +1,14 @@
 #ifndef CUSTOMER_H
 #define CUSTOMER_H
 #pragma once
-#include "../thirdparty/SQLiteCpp/include/SQLiteCpp/SQLiteCpp.h"
-#include "Park_time.h"
-#include <ctime>
-#include <random>
-#include <string>
-#include <vector>
-#include "data.h"
 
-using std::string;
+
+#include "Park_time.h"
+#include "data.h"
+#include <random>
+#include <vector>
+
+
 using std::vector;
 
 // will make it easy to represent it in the database while making it easy to use while programming
@@ -32,7 +31,7 @@ class Customer {
     Customer(string name_, Verhicle_type verhicle_);
     Customer(int id_, string name_, string card_code_, Verhicle_type verhicle_,
              vector<Park_time> instances); // needed to construct from db
-    // potentially: add a destructor that calls update_db() before being destroyed
+    ~Customer();
     int id;
     string name;
     string card_code;