Date mask problems

[newmangreen]

Hi, Testing imask, listing following findings:

1. Can enter 30.02 with only "mask: Date" which should not be allowed for February. It doesn't allow to complete but I can leave it as uncompleted.

2. Need an option to show placeholder on focus and removing on blur, like that:

  mask.updateOptions({ lazy: false }); // Show placeholder on focus
});

element.addEventListener('blur', () => {
  mask.updateOptions({ lazy: true }); // Hide placeholder when unfocused
});

3. Need an option to autocomplete with current month-year or year after entering 01 or 01.02. on blur.