* Added the 'getChildAt()' method in the def file
* Fixed Enchant test
* FIx: added nullable to GtkAccelKey in def file of GtkAccelMap lookup_entry method to prevent rising nullpointers from within jg
* Exposed the method guessLanguage(String, String) in LanguageManager
* Exposed the WindowState 'FOCUSED' which may otherwise cause problems when retrieving window states such as maximized.
* Exposed the getChildAt(int, int) method in Grid