EVT_STC_POSCHANGED has been removed as it has been deprecated in
Scintilla for several releases now.
+All the Window and GDI (pen, bitmap, etc.) class constructors and also
+many toplevel functions and static methods will now check that a
+wx.App object has already been created and will raise a
+wx.PyNoAppError exception if not.
+
+Added more default args as needed to allow most window types to be
+constructed with only the parent window arg. In some cases other args
+may be required for normal operation, but they can usually be set
+after construction.
+