Update python-traittypes to version 0.2.1 / rev 9 via SR 1056815
https://build.opensuse.org/request/show/1056815
by user bnavigator + dimstar_suse
- Add python-fix-nptypes.patch gh#jupyter-widgets/traittypes#32
- Clean specfile, no files catachall
- Use PEP517 build (forwarded request 1056814 from bnavigator)