Marshal JavaScript Date to java.util.Date

[vtrifonov]

Add marshalling of javascript Date object ot Java java.util.Date when calling a native method accepting java.util.Date argument.

[vmutafov]

It's probably a good idea to marshal the JS Date object to a corresponding java.time class too, depending on the case. Java's Date and Calendar classes are the old APIs for working with date/time, the new ones are in the java.time package and are the recommended ones nowadays.