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:

https://doc.qt.io/qt-5/index.html

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:

https://bugreports.qt.io/

Each of these identifiers can be entered in the bug tracker to obtain more
information about a particular change.

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*                                  QtHelp                                  *
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 - 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.

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*                               Qt Designer                                *
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 - The palette editor dialog has been overhauled.

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*                               macdeployqt                                *
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 - Added "-hardened-runtime" option to support app notarization.

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*                                   qdoc                                   *
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 - 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.
