KDDockWidgets 1.3.0

Highlights of the 1.3.0 Release

• Experimental QtQuick support (#49)
• Added static DockWidgetBase::byName() (#126)
• The enum KDDockWidgets::AddingOption has been deprecated, use
  KDDockWidgets::InitialVisibilityOption instead
• You can now pass a preferred initial size to MainWindow::addDockWidget() (#95)
• Added DockWidgetBase::Option_DeleteOnClose
• Added Config::Flag_CloseOnlyCurrentTab
• PySide6 support
• Layout restorer now restores maximzied/minimized state too (#81)
• Fixed dock indicators sometimes not appearing on Windows (#103)
• Fixed Flag_NativeTitleBar not working
• Fixed drag offset when dragging too fast with mouse
• Fixed bug where last tab index position wouldn't be remembered in case user
  had manually reordered tabs (#154)
• Fixed crash when hosting a QQuickWidget (#150)
• Fixed CMake Visual Studio generator not working
• Sidebar overlays now maintain their size when toggled (#155)
• Added DockWidget::setFloatingGeometry() (#144)