added change notes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49645 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -91,6 +91,10 @@ Major new features in 2.8 release
 2.8.7
 -----
 
+All (GUI):
+- wxGraphicsContext implementations now all have the pixel's center at 0.5,0.5, 
+  avoiding differences in anti-aliasing between platforms
+
 wxMSW:
 
 - Correct (harmless) warnings given for forward-declared DLL-exported classes
@@ -101,6 +105,13 @@ wxGTK:
 - Added gtk.window.force-background-colour wxSystemOptions option to work around
   a background colour bug in the gtk-qt theme under KDE.
 
+wxMac:
+- multiline textcontrols now support attributes for margins and alignement, only
+  a single tab distance can be set though
+- deactivated refcounting checks when running under leopard for the toolbar implementation
+  as the implementation there seems to be different
+- fixed 'Reopen' application behaviour (not always was a window shown when reopening the app)
+
 
 2.8.6
 -----