Add changes file

List the most relevant changes

Change-Id: I8556f2081d6e88572f1a5ffa694d561d6986c3cb
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>

dist/changes-5.5.1

+Qt 5.5.1 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.5.0.
+
+Qt 5.5 introduces many new features and improvements as well as bugfixes
+over the 5.4.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 5.5 series is binary compatible with the 5.4.x series.
+Applications compiled for 5.4 will continue to run with 5.5.
+
+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.
+
+****************************************************************************
+*                          General                                         *
+****************************************************************************
+
+QtWebEngineCore
+--------
+ - Security fixes
+   * ICU: CVE-2014-8146, CVE-2014-8147
+   * Blink: CVE-2015-1284, CVE-2015-1291, CVE-2015-1292
+   * Skia: CVE-2015-1294
+   * V8: CVE-2015-1290
+ - [QTBUG-47945, QTBUG-48088] Fixed crashes and asserts on exit
+
+
+****************************************************************************
+*                      Platform Specific Changes                           *
+****************************************************************************
+
+Linux
+-----
+ - [QTBUG-47301] Fixed crash on XCB GLES2 and Wayland
+ - [QTBUG-45801] Find libEGL and libEGLES2v2 without development packages
+
+Windows
+-------
+ - [QTBUG-44763] Fix slow proxy resolution with multiple network interfaces
+ - [QTBUG-47129] Make QtWebEngineProcess use full 4GB memory on 32-bit