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Qt 5.6 introduces many new features and improvements as well as bugfixes
over the 5.5.x series. For more details, refer to the online documentation
included in this distribution. The documentation is also available online:
http://doc.qt.io
The Qt version 5.6 series is binary compatible with the 5.5.x series.
Applications compiled for 5.5 will continue to run with 5.6.
Some of the changes listed in this file include issue tracking numbers
corresponding to tasks in the Qt Bug Tracker:
http://bugreports.qt.io
Each of these identifiers can be entered in the bug tracker to obtain more
information about a particular change.
****************************************************************************
* Important Behavior Changes *
****************************************************************************
- For security reasons, MNG and JPEG 2000 handlers will no longer be
built by default, unless the required codec library is found on the
system. I.e., the bundled 3rd party libraries will by default not be
used. In practice, this means that the qmng and qjp2 handlers will
not be present by default.
The reason is that upstream development of those codes libraries has
stalled, so security issues are not addressed.
Users who still want these handlers using the bundled libraries can
easily build them from the source projects:
src/plugins/imageformats/jp2/jp2.pro
src/plugins/imageformats/mng/mng.pro
****************************************************************************
* General *
****************************************************************************
- Bundled libwebp updated to version 0.4.4.
- Bundled libtiff updated to version 4.0.6.
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