Input field is required

[Jeff Tillwick]

Using the directive, datetime on an input type=text element, the element acts as if it is required and my form won't submit unless the field has a value. I need to be able to support and empty date input field.

[eight]

I have pushed some commits:
https://rawgit.com/eight04/angular-datetime/7d832aff970701c7a8733d7c8665adfbeba85ac8/demo.html

• Setting viewValue to "" will not raise parsing error if the field is not required.
• If the field is empty, restore last value on focus.
• Setting viewValue to "" will make modelValue become null.
• Setting modelValue to null will make viewValue become "".

[eight]

Fixed in 1.3.0