amsul/pickadate.js — pull request #463 by ardove (2014-06-20 20:15:01+00:00)
Title: Add Callback for MonthChange/YearChange

Since there is already a 'change' handler for the Month/Year dropdowns, some browsers wouldn't let me
attach another one. I decided it was best to add a callback in the
settings object that is passed through (and it seems to work great for me). Thought I'd commit and submit a
pull request in case anyone else was having the same issue.