Don't use lower-case Qt macros

gui/mainwindow.h

@@ -50,7 +50,7 @@ public:
     explicit MainWindow(QSettings &settings, QtUtilities::QtSettings *qtSettings = nullptr, QWidget *parent = nullptr);
     ~MainWindow() override;
 
-public slots:
+public Q_SLOTS:
     // file management
     bool openFile(const QString &path);
     bool openFile(const QString &path, Io::PasswordFileOpenFlags openFlags);
@@ -74,7 +74,7 @@ protected:
     void closeEvent(QCloseEvent *event) override;
     void timerEvent(QTimerEvent *event) override;
 
-private slots:
+private Q_SLOTS:
     // file management
     bool showFile();
     // account/categories management

quickgui/controller.h

@@ -86,7 +86,7 @@ public:
     QString undoText() const;
     QString redoText() const;
 
-public slots:
+public Q_SLOTS:
     void init();
     void load();
     void create();
@@ -129,7 +129,7 @@ signals:
     void undoTextChanged(const QString &undoText);
     void redoTextChanged(const QString &redoText);
 
-private slots:
+private Q_SLOTS:
     void handleEntriesRemoved(const QModelIndex &parentIndex, int first, int last);
     void handleRecentFilesChanged();