Version 1.9.1 is available upstream. Please consider updating!
It seems that version 1.9.1 is available upstream, while the latest version in the Gentoo tree is 1.9.0. You think this warning is false? Read more about it here.
Yet more Objects for Data Analysis is a small set of data analysis
(specifically histogramming) classes being developed by MCnet
members as a lightweight common system for MC event generator
validation analyses, particularly as the core histogramming system