Add missing constructors and assignment operators

… to Instance and Connection.

include/connection.hpp

@@ -92,6 +92,25 @@ public:
         _instance.copy_connection_properties(*this);
     }
 
+    /*!
+     *  @brief  Copy constructor. A new CURLWrapper is constructed.
+     *
+     *  @since  0.5.2
+     */
+    Connection(const Connection &other) = default;
+
+    //! Move constructor
+    Connection(Connection &&other) noexcept = delete;
+
+    //! Destructor
+    ~Connection() noexcept override = default;
+
+    //! Copy assignment operator
+    Connection& operator=(const Connection &other) = delete;
+
+    //! Move assignment operator
+    Connection& operator=(Connection &&other) noexcept = delete;
+
     /*!
      *  @brief  Make a HTTP GET call with parameters.
      *

include/instance.hpp

@@ -65,6 +65,25 @@ public:
         , _max_chars{0}
     {}
 
+    /*!
+     *  @brief  Copy constructor. A new CURLWrapper is constructed.
+     *
+     *  @since  0.5.2
+     */
+    Instance(const Instance &other) = default;
+
+    //! Move constructor
+    Instance(Instance &&other) noexcept = delete;
+
+    //! Destructor
+    ~Instance() noexcept override = default;
+
+    //! Copy assignment operator
+    Instance& operator=(const Instance &other) = delete;
+
+    //! Move assignment operator
+    Instance& operator=(Instance &&other) noexcept = delete;
+
     /*!
      *  @brief  Set the properties of the connection of the calling class up.
      *