include: make header guards more sane The C++ standard[1] says: Each identifier that contains a double underscore __ or begins with an underscore followed by an uppercase letter is reserved to the implementation for any use. [1]: https://timsong-cpp.github.io/cppwp/n4659/lex.name#3.1

#ifndef MINORI_GUI_PAGES_HISTORY_H_
#define MINORI_GUI_PAGES_HISTORY_H_

#include <QWidget>

class HistoryPage final : public QWidget {
	Q_OBJECT

public:
	HistoryPage(QWidget* parent = nullptr);
};

#endif // MINORI_GUI_PAGES_HISTORY_H_