- drop obsolete patches
- rebase remaining patches
- drop zlib-devel from BR (required by libxml2-devel)
- add gcc-c++ to BR
- fix building bindings with swig-3.x
- drop old Obsoletes: and Provides:
- enabled GUI
- enabled Eigen2
- updated to 2.3.0 final
- patched to fix various build issues
- split libs and GUI into separate subpackages
- fixed rpmlint warnings about strange file permissions