angular-ui/bootstrap — pull request #1382 by skytracer (2013-12-10 12:17:12+00:00)
Title: fear(datepicker):default date for datepicker popup when there is no value set

Useful when the model value is null/empty and you want to have the calendar starting at some date.
I am using it for birthday inputs with a year 1980 as default, since I do not want the users to start going back from current date.