- make the JPEG exporters to work by including proper library-installation detection and not using unimplemented API
- disable/comment special observing on addXXX: & removeXXX: method, that throw exceptions when you have some of these methods not using NSSet
- repair the NS<geometry>FromString methods ('{%g,%g}' is a good scan string, not '{"%g","%g"}')
- keep our branch changes on Win32 keyboard handling as it supports dead-keys