default date value could be problematic

[kennethkoontz]

When a date is selected, with default settings, the onChange function is called with a value that is misleading.

The date value contains the current time like so - 2018-07-31T21:16:25Z. Instead I would expect a value of something like 2018-07-31T00:00:00Z or 2018-07-31T00:00:00-07:00 (moment("20111031", "YYYYMMDD")).

The reason why this is problematic, is that if a user clicks on the date value at the beginning of the day and then clicks that same date at a different time of the day, the date value will be different. Which could lead to unintended results.

I think it makes sense to zero out the dates, or use the results from moment().