MakingSense/moment-datepicker — pull request #48 by weiran (2014-03-21 09:59:38+00:00)
Title: Fixed issue with a null date represented as today

When no value is set, the value passed is `undefined`. However `moment(undefined)` has the same meaning as `moment()` which returns today's date. What we really want is `moment(null)` for null values. This can be checked by calling `isValid()` on the moment date, a null date should return false.

This prevents the binding handler from setting today's date by default.