Revision control
++ Qt 5.12.4 is a bug-fix release. It maintains both forward and backward
++ compatibility (source and binary) with Qt 5.12.0 through 5.12.3.
++
++ For more details, refer to the online documentation included in this
++ distribution. The documentation is also available online:
++
++
++ The Qt version 5.12 series is binary compatible with the 5.11.x series.
++ Applications compiled for 5.11 will continue to run with 5.12.
++
++ 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.
++
++ ****************************************************************************
++ * Compositor *
++ ****************************************************************************
++
++ - Fixed a crash that could happen when accessing the d_func of
++ QWaylandShell.
++
++ ****************************************************************************
++ * QPA plugin *
++ ****************************************************************************
++
++ - The non-blocking version of eglSwapBuffers is now used, if supported.
++ This fixed a bug where minimized windows would block the event loop.
++ - Windows that don't get frame callbacks from the compositor within 100 ms
++ are now set as not exposed. This should stop most clients from rendering
++ unnecessary frames to minimized or hidden windows.
++ - Fixed a crash on xdg-shell v5 when creating a popup without a valid
++ parent.
++ - Fixed a protocol error when an application tried to render to a window
++ before a shell or sub-surface was created.
++ - Fixed a crash when closing multiple popups at once.