Datepicker is not showing up on focus

[astralspark]

When I trigger focus event on input, then datepicker doesn't shows up. Click event does the job, but I think it should be focus at least on input elements.

[nazar-pc]

Would you be so kind to provide a demo?
https://github.com/nazar-pc/PickMeUp#contribution

[astralspark]

Of course: https://jsfiddle.net/qx152r6r/85/
jQuery library included in this example.

[nazar-pc]

Ideally yes, it should be focus/blur events, but since on focus we're showing popup, when we click there, blur event will be fired, which would result in popup being closed.
I'll mark this as potential enhancement, PR is welcomed.