* Add 0.4.0 release notes

doc_src/HISTORY.TXT

@@ -2,6 +2,53 @@
 Change Log
 ==========
 
+0.4.0 Various cleanup and bug fixes.
+------------------------------------------------------------------
+03-April-2010
+ *  Gracefully Handle dir() calls on Application or WindowSpecification objects
+   (which used hang for a while as these classes would search for windows
+   matching __members__, __methods__ and __bases__). The code now checks for
+   any attribute that starts with '__' and ends with '__' and raises
+   AttributeError immediately. Thanks to Sebastian Haase for raising this.
+
+ * Removed the reference to an Application object in WindowSpecification.
+   It was not used in the class and made the class harder to use.
+   WindowSpecification is now more useful as a utility class.
+
+ * Add imports of application.WindowSpecification and application.Application
+   to pywinauto.__init__.py so that these classes can be used more easily
+   (without having to directly import pywinauto.application). Thanks again to
+   Sebastian Haase.
+
+ * Added a function to empty the clipboard (thanks to Tocer on Sourceforge)
+
+ * Use 'SendMessageTimeout' to get the text of a window. (SendMessage will hang
+   if the application is not processing messages)
+
+ * Fixed references to PIL.ImageGrab. PIL add's it's module directly to the 
+   module path, so it should just be referenced by ImageGrab and not 
+   PIL.ImageGrab.
+
+ * Use AttachThreadInput + PostMessage rather than SendMessageTimeout to send
+   mouse clicks.
+ 
+ * Fix how timeout retry times are calculated in timings.WaitUntil() and 
+   timings.Wait
+ 
+ * Fixed some issues with application.Kill_() method, highlighted due to the 
+   changes in the HwndWrapper.Close() method.
+   
+ * Fix writing images to XML. It was broken with updates to PIL that I had not
+   followed. Changed the method of knowing if it is an image by checking for
+   various attributes.
+ 
+ * Renamed WindowSpecification.(Ww)indow() to ChildWindow() and added 
+   deprecation messages for the other functions.
+ 
+ * Improved the tests (fixed test failures which were not pywinauto issues)
+   
+
+
 0.3.9 Experimental! New Sendkeys, and various fixes
 ------------------------------------------------------------------
 27-November-2009