Qt 5.9 introduces many new features and improvements as well as bugfixes
over the 5.8.x series. For more details, refer to the online documentation
included in this distribution. The documentation is also available online:

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

The Qt version 5.9 series is binary compatible with the 5.8.x series.
Applications compiled for 5.8 will continue to run with 5.9.

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.

New features
------------
- [QTBUG-50682] Added a possibility to change legend marker shape
- [QTBUG-52379] Added support for more than one bar series
- [QTBUG-51612] Added minor ticks support for QLogValueAxis

Fixed issues
------------
- [QTBUG-52442] Optimized barcharts painting
- [QTBUG-56238] Removed 200x200 minimum size from chart
- [QTBUG-57328] Fixed crash when log axis range is initialized to contain no ticks
- [QTBUG-57351] Fixed domain ranges when attaching new axis that changes domain type
- [QTBUG-59835] Fixed some series blocking mouse events from series items
- Fixed reversing logarithmic y axis
- Fixed crash when animating axes with polar charts
- Fixed some issues with syncing item and series visibility

