Qt 5.4 introduces many new features and improvements as well as bugfixes over the 5.3.x series. For more details, refer to the online documentation included in this distribution. The documentation is also available online: http://qt-project.org/doc/qt-5.4 The Qt version 5.4 series is binary compatible with the 5.3.x series. Applications compiled for 5.3 will continue to run with 5.4. Some of the changes listed in this file include issue tracking numbers corresponding to tasks in the Qt Bug Tracker: http://bugreports.qt-project.org/ Each of these identifiers can be entered in the bug tracker to obtain more information about a particular change. **************************************************************************** * Library * **************************************************************************** QWinMime -------- - [QTBUG-39559] Added abstract class QWinMime (equivalent to WindowsMime in Qt 4) for registering custom mime type conversions. QWinThumbnailToolBar -------------------- - [QTBUG-36730] Added pixmap properties and change notifications for thumbnail icons and live preview.