Changelog for libusb-1_0-0-1.0.21-1.42.x86_64.rpm :

* Tue Nov 15 2016 aevseevAATTgmail.com- New upstream version - 1.0.21
* Tue Jul 19 2016 aevseevAATTgmail.com- New upstream version - 1.0.20
* Thu Aug 28 2014 aevseevAATTgmail.com- New upstream version - 1.0.19 (libusb instead of libusbx)
* Mon May 12 2014 aevseevAATTgmail.com- Add build requirement for pkgconfig to correct providing pkgconfig(libusb)