Add changes file for Qt 5.14.0

Change-Id: I0ef3dd0006783337917677cf0b5f980ec0215081
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

dist/changes-5.14.0

@@ -0,0 +1,49 @@
+Qt 5.14 introduces many new features and improvements as well as bugfixes
+over the 5.13.x series. For more details, refer to the online documentation
+included in this distribution. The documentation is also available online:
+
+https://doc.qt.io/qt-5/index.html
+
+The Qt version 5.14 series is binary compatible with the 5.13.x series.
+Applications compiled for 5.13 will continue to run with 5.14.
+
+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.
+
+****************************************************************************
+*                                Qt3DExtras                                *
+****************************************************************************
+
+ - QDistanceFieldGlyphCache:
+   * make sure the change arbiter of atlas for QText2DEntity can be set
+     when traversing node tree, and add new auto test for this.
+
+****************************************************************************
+*                                Qt3DRender                                *
+****************************************************************************
+
+ - QNoPicking: control picking execution in the FrameGraph
+ - Textures: internal data sharing removed
+ - QSortPolicy can now sort by Texture
+ - QPickEvent adds property for picked entity
+
+ - QImageTextureDataFunctor:
+   * return a invalid image data when url is invalid to ensure the property
+     of GLTexture will not be set to NoFormat
+
+****************************************************************************
+*                               UNSPECIFIED                                *
+****************************************************************************
+
+ -  Add basic support for KTX container format.
+ -  Add worldMatrix property on QTransform
+ -  Added SubtreeEnabler to allow easing enabling
+   and disabling of frame graph subtrees.
+ - [QTBUG-74977]  Scene3D add compositingMode property. Allows underlay
+   rendering.
+ -  Introduce Scene3DView to render multiple distinct 3D scenes