Revision control
++ 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:
++
++
++ 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:
++
++
++ Each of these identifiers can be entered in the bug tracker to obtain more
++ information about a particular change.
++
++ Important Changes
++ -----------------
++ - General:
++ * Introduce logging category "qt.svg"
++ * Add file name and line number to SVG parser error messages
++
++ - SVG Image I/O:
++ * [QTBUG-44863] Use defaultSize according to svg standard. If
++ width/height attributes are present, they will be used as default
++ image read size instead of the viewBox width/height.
++
++ - QSvgWidget:
++ * Paint the background if one has been set via a stylesheet
++
++ - QSvgGenerator:
++ * [QTBUG-58148] Add support for pattern brushes
++
++ - QSvgIconEngine:
++ * [QTBUG-59729] Paint correct size if device pixel ratio is fractional