Do not expose members that shouldn't be touched

sequential/linkedlist.hpp

@@ -20,7 +20,7 @@ struct Node
 template<class T>
 class List
 {
-protected:
+private:
 	std::unique_ptr<Node<T>> root;
 	Node<T> * tailPtr;
 	std::size_t size;

sequential/vector.hpp

@@ -5,7 +5,7 @@
 template<class T>
 class Vector
 {
-protected:
+private:
 	T * data;
 	std::size_t size;