Changelog for libimagequant-devel-2.12.2-lp150.11.1.x86_64.rpm :

* Fri Feb 15 2019 munix9AATTgooglemail.com- update to version 2.12.2
* new liq_histogram_add_fixed_color()
* faster for large/complex images
* Thu Nov 16 2017 dimstarAATTopensuse.org- Initial package, version 2.11.3 (library got split out from pngquant).