isValid() is now true for the root node
isValid() is now true for the root node

mmitkevich/libqxt,hrobeers/qxtweb-qt5,mmitkevich/libqxt,hrobeers/qxtweb-qt5,mmitkevich/libqxt,hrobeers/qxtweb-qt5,mmitkevich/libqxt,hrobeers/qxtweb-qt5,hrobeers/qxtweb-qt5