nanshe/generic_decorators.py: Created qt_class_decorate_all_methods to provide a metaclass decorator for Qt-based objects.
nanshe/debugging_tools.py: Created the qt_log_class decorator for Qt-based objects to decorate themselves and provide loggin for their methods.
nanshe/nanshe_viewer.py: Made sure that all Qt-based objects use the decorator debugging_tools.qt_log_class.