angular/angular.js — pull request #3282 by npup (2013-07-19 15:05:35+00:00)
Title: feat ngRepeat: add $even and $odd properties to iterator

When iterating, odd/even status is often nice to to have readily available in a
highly readable way.
These properties are not coupled to using CSS classes in the way of ngClassEven
and ngClassOdd directives.