Revision control
++ Qt 5.9.3 is a bug-fix release. It maintains both forward and backward
++ compatibility (source and binary) with Qt 5.9.0.
++
++ For more details, refer to the online documentation included in this
++ distribution. The documentation is also available online:
++
++
++ The Qt version 5.9 series is binary compatible with the 5.8.x series.
++ Applications compiled for 5.8 will continue to run with 5.9. Exception:
++ between Qt 5.8.0 and 5.9.0 the QWaylandQuickOutput class was changed
++ in a binary incompatible way.
++
++ Some of the changes listed in this file include issue tracking numbers
++ corresponding to tasks in the Qt Bug Tracker:
++
++
++ Each of these identifiers can be entered in the bug tracker to obtain more
++ information about a particular change.
++
++
++ ****************************************************************************
++ * Qt Wayland QPA Plugin 5.9.3 Changes *
++ ****************************************************************************
++
++ - Fix crash when wl-shell setType is called with a hidden parent.
++
++ - [QTBUG-63840] Fix crash with XDG shell v6 when parent of popup is not
++ initialized.
++
++ - Fix flickering if backing store is flushed multiple times between paints.
++
++ ****************************************************************************
++ * Qt Wayland Compositor API 5.9.3 Changes *
++ ****************************************************************************
++
++ - [QTBUG-63208] Fix crash after destroying view with mouse focus
++
++ - [QTBUG-63039] Make multi-threaded QML compositors work with Nvidia
++ EGLStreams. Note: this requires setting the Qt::AA_ShareOpenGLContexts
++ application attribute.
++
++ - Add missing signals for properties:
++ * QWaylandSurface::cursorSurfaceChanged
++ * QWaylandOutput::windowChanged
++ * QWaylandOutput::geometryChanged
++ * QWaylandOutput::availableGeometryChanged
++ * QWaylandCompositor::socketNameChanged
++
++ - [QTBUG-62638] Make sure mask is applied when window is reset.
++