Display Package Changelog

This feature has not been implemented in gentoolkit-0.2 yet but the etcat variant which is presented below does still work. etcat and qpkg are superceded by equery as of portage-2.0.50 and gentoolkit-0.2.

NOTE: For systems <portage-2.0.50 and <=gentoolkit-0.2 use: etcat changes PACKAGE[-VERSION]