PR #8228 consisted of the following:
* Added Documentation for the expression completer
* Working PATH completion
* Allow completes on trailing separator
* Fixed paths appearing with a . at first
* Chaining completions on enter
* Fixed Missing Separator and Document Completions
- fixed missing separator for contextual Properties (ConstraintsHeight instead of Constraints.Height)
- fixed retries on filename#objectname so that they work better
* In UIntSpinBox rename the signal to not overwrite the signal of the base class
* In UIntSpinBox use the (ambiguous) signal 'valueChanged' of the base class QSpinBox
* To avoid that connect() fails use the function pointer of the Qt class where the signal is defined
* QString::indexOf() is now marked as [[nodiscard]]
* QApplication::fontMetrics() is deprecated, use the constructor of QFontMetricsF
* fix -Wunused-result
* fix -Wunused-but-set-variable
* QString::indexOf() is now marked as [[nodiscard]]
* Replace deprecated methods of QMessageBox
* QMouseEvent::globalPos() is deprecated, use globalPosition().toPoint()
* QWidget::enterEvent() requires a QEnterEvent as argument
* QLibraryInfo::location() is deprecated, use path()
* QVariant::Type is deprecated, use QMetaType::Type
* QVariant::canConvert(int) is deprecated, use QVariant::canConvert(QMetaType) or QVariant::canConvert<T>()
* QMessageBox::standardIcon is deprecated, use QStyle::standardIcon()
* Replace deprecated method QMessageBox::question(), ...
* QApplication::fontMetrics() is deprecated
* QDropEvent::mouseButtons() is deprecated, use buttons()
* QDropEvent::keyboardModifiers() is deprecated, use modifiers()
* Constructor of QFontDatabase is deprecated, use static methods instead
* Qt::AA_DisableHighDpiScaling is deprecated
* Qt::AA_EnableHighDpiScaling is deprecated
* Qt::AA_UseHighDpiPixmaps is deprecated
