Aligning year selector to use zero indexed months

When using a year selector, the datepicker will return February of the selected year due to the fact that the JavaScript Date object's `month` value is zero index based. Updating the value passed here will direct the `select_date` function to pass the correct `month` value to the Date object.

src/zebra_datepicker.src.js

@@ -1551,7 +1551,7 @@
                     if ($.inArray('months', views) === -1)
 
                         // put selected date in the element the plugin is attached to, and hide the date picker
-                        select_date(selected_year, 1, 1, 'years', $(this));
+                        select_date(selected_year, 0, 1, 'years', $(this));
 
                     else {