Add support for onBlur event

[oleksii-petrashchuk]

I've faced an issue when using your library, when I need to have an onBlur event to handle some edge cases there and it appeared to not have that possibility.

Would be much appreciated if you can implement that :)

Or we can discuss, maybe it can be implemented by me as a contribution to your project.

Hope to hear from you on that topic soon. Thank you in advance.