Default progress is now infinite. Finite is moved to new class

Progress.h

@@ -7,23 +7,20 @@
 class Progress
 {
 protected:
-	size_t m_current;
-	size_t m_total;
-
 	std::string m_message;
+	size_t m_current;
 
 public:
-	Progress(const std::string& message, size_t total, size_t current = 0);
+	Progress(const std::string& message, size_t current = 0);
+	virtual ~Progress() = default;
 
-	void set_total(size_t total);
-	void set_progress(size_t current);
 	void set_message(const std::string& message);
 
-	void increment_progress(size_t inc = 1);
-
-	std::string print_progress();
-
-	friend std::ostream& operator<<(std::ostream& os, const Progress& progress);
+	virtual void set_progress(size_t current);
+	virtual void increment_progress(size_t inc = 1);
+	virtual std::string print_progress() const;
 };
 
+std::ostream& operator<<(std::ostream& out, const Progress& progress);
+
 #endif // PROGRESS_H_