Revision control
++ Qt 5.15 introduces many new features and improvements as well as bugfixes
++ over the 5.14.x series. For more details, refer to the online documentation
++ included in this distribution. The documentation is also available online:
++
++
++ The Qt version 5.15 series is binary compatible with the 5.14.x series.
++ Applications compiled for 5.14 will continue to run with 5.15.
++
++ 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.
++
++ ****************************************************************************
++ * QtHelp *
++ ****************************************************************************
++
++ - QHelpLink data structure has been introduced and used in newly added
++ documentsForIdentifier() and documentsForKeyword() methods.
++ - Deprecated linksForIdentifier() and linksForKeyword() methods
++ in favor of the methods above.
++ - The QHelpFilterSettings class has been added, describing all
++ the available filter details.
++ - The QHelpFilterSettingsWidget class has been added, serving
++ as an editor for all available filters.
++
++ ****************************************************************************
++ * Qt Designer *
++ ****************************************************************************
++
++ - The palette editor dialog has been overhauled.
++
++ ****************************************************************************
++ * macdeployqt *
++ ****************************************************************************
++
++ - Added "-hardened-runtime" option to support app notarization.
++
++ ****************************************************************************
++ * qdoc *
++ ****************************************************************************
++
++ - QDoc now supports DocBook as an output format.
++ - Introduced configuration variable 'locationinfo' to drop host-specific
++ paths from the generated output.
++ - Added capability to display class/method template parameters in the
++ generated documentation.
++ - QDoc now generates correct documentation for enum classes.
++ - QDoc is now aware of the namespace scope of an \fn command without
++ requiring fully qualified paths.
++ - Generate output for arguments passed to the \obsolete command.
++ - [QTBUG-37355] QDoc now generates a note for the name of the
++ corresponding handler in \qmlsignal documentation.
++ - Added support for CMake-based example projects.