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.
++
++ ****************************************************************************
++ * Platform Specific Changes *
++ ****************************************************************************
++
++ - X11 / XCB:
++ * [QTBUG-45375] QTabletEvent coordinates now come from AbsX/AbsY
++ valuators in the X11 event, in more precise 32.32 fixed-point format,
++ scaled to fit the virtual desktop. It's possible to revert to using
++ the legacy 16.16-format event_x/event_y coordinates as in previous
++ releases by setting the QT_XCB_TABLET_LEGACY_COORDINATES environment
++ variable.
++
++ ****************************************************************************
++ * QtCore *
++ ****************************************************************************
++
++ - Global:
++ * [QTBUG-72073] Added the QT_NO_FLOAT16_OPERATORS macro in order to work
++ around a Microsoft <= VS2017 compiler bug that is exposed when using
++ std::bitset along with any Qt header that includes <qfloat16.h>.
++
++ - QDeadlineTimer:
++ * [QTBUG-69750] Fixed integer overflows leading to immediate timeouts.
++
++ - QFile:
++ * Made QFile::copy() issue a filesystem-synchronization system call,
++ which would make it less likely to result in incomplete or corrupt
++ files if the system reboots or uncleanly shuts down soon after the
++ function returns. New code is advised to use QSaveFile instead, which
++ also allows to display a progress report while copying.
++
++ - QFileInfo:
++ * [QTBUG-63970][QTBUG-30401][QTBUG-20791] Fixed resolving of symbolic
++ links to UNC shares on NTFS file systems.
++
++ - QMetaObject:
++ * Non-copyable lambdas can now be used with invokeMethod(). For
++ consistency reasons, the functor object is now always moved.
++
++ ****************************************************************************
++ * QtGui *
++ ****************************************************************************
++
++ - [QTBUG-73231] QWindow::mapToGlobal()/mapFromGlobal() now handle windows
++ spanning screens correctly.
++
++ - [QTBUG-75522] QBezier: Fix possible endless loop when stroking curves
++
++ ****************************************************************************
++ * QtWidgets *
++ ****************************************************************************
++
++ - QMenu:
++ * Shortcuts are again shown by default in context menus, except on
++ macOS. They can be forced off by setting
++ AA_DontShowShortcutsInContextMenus to true.
++
++ ****************************************************************************
++ * Third-Party Code *
++ ****************************************************************************
++
++ - libpng was updated to version 1.6.37
++ - Updated QLocale to CLDR v35.1
++ - Updated bundled SQLite to version 3.28.0