Updated Changelog

Documentation/DeveloperHelpSources/changelog.docu

 /*! \page changelog Changelog
 
+- <b>OpenFlipper 4.1 ( ?/?/? )</b>
+     - <b>Python Subsystem</b>
+         - Exit application on error in scripting with batch mode
+         - Correctly output logging information
+     - <b>Testing</b>
+         - Introduce python tests (Just add a PythonTests subdirectory to your plugin)
+
 
 - <b>OpenFlipper 4.0 ( 05/03/2019 )</b>
      - <b>Breaking changes</b>