switching to newer qt quick window

src/qml/main.qml

@@ -2,7 +2,7 @@ import QtQuick 2.15
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
 import Qt.labs.platform 1.1 as Labs
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import QtMultimedia 5.15
 /* import QtAudioEngine 1.15 */

src/qml/presenter/Actions.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.13
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import QtMultimedia 5.15
 /* import QtAudioEngine 1.15 */

src/qml/presenter/Header.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.13
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import org.kde.kirigami 2.13 as Kirigami
 

src/qml/presenter/LeftDock.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.13
 /* import QtQuick.Dialogs 1.0 */
 import QtQuick.Controls 2.0 as Controls
-/* import QtQuick.Window 2.13 */
+/* import QtQuick.Window 2.15 */
 import QtQuick.Layouts 1.15
 /* import QtQuick.Shapes 1.15 */
 import QtQml.Models 2.12

src/qml/presenter/MainWindow.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.15
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import org.kde.kirigami 2.13 as Kirigami
 import "./" as Presenter

src/qml/presenter/Presentation.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.15
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 /* import QtAudioEngine 1.15 */
 import org.kde.kirigami 2.13 as Kirigami

src/qml/presenter/PresentationWindow.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.15
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import org.kde.kirigami 2.13 as Kirigami
 import "./" as Presenter

src/qml/presenter/ServiceList.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.13
 /* import QtQuick.Dialogs 1.0 */
 import QtQuick.Controls 2.0 as Controls
-/* import QtQuick.Window 2.13 */
+/* import QtQuick.Window 2.15 */
 import QtQuick.Layouts 1.15
 import QtQuick.Shapes 1.15
 /* import QtQml.Models 2.12 */

src/qml/presenter/SlideEditor.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.15
 import QtQuick.Dialogs 1.0
 import QtQuick.Controls 2.15 as Controls
-import QtQuick.Window 2.13
+import QtQuick.Window 2.15
 import QtQuick.Layouts 1.15
 import QtMultimedia 5.15
 /* import QtAudioEngine 1.15 */