in package org.clojure/java.data
(cjd/from-java (java.util.Date.)) will use setter and getter method of java.util.Date, which produce incorrect clojure object,
because java.util.Date is a basic class of java language, it's better keep "::do-not-convert".
so i add this class to ::do-not-convert classify.
from-java on a Date produces a hash map of its elements. to-java on that hash map produces a Date. That is the expected behavior. There is now a test to show that this works.
Support for java.time.Instant has also been added that round-trips the same way.