Allow "month change" by clicking on "other" days at the start/end of the displayed month.

[cbanack]

I'm loving this calendar library!

Would be great if my users could click on the greyed out days at the end or start of the month, and have this trigger a transition to the next/prev month, where it would automatically select the day that the user clicked on, instead of the first day of the new month.

Cheers!