Change the dates as per months

[VirajMadhu]

I think it will be more user-friendly if dates are change as per month.

As an example :

• February has 28 or 29 days. But in the picker, if we select February, we got 30 and 31 dates also.

[DieTime]

Hello, thanks for the issue, this moment is not really thought out, so I will try to implement it in the near future.

I would be grateful if you would make changes and open a PR.