application/msgpack does not support java.util.Date

[tsaixingwei]

The application/msgpack format does not support packing and unpacking Clojure #inst or java.util.Date instances.

Test:

(->> #inst"2008-05-10T00:00:00.000-00:00"
     (m/encode m "application/msgpack")
     (m/decode m "application/msgpack"))

produces an Exception:

Syntax error (IllegalArgumentException) compiling at (test_jms_msgpack.clj:61:1).
No implementation of method: :packable-pack of protocol: #'msgpack.core/Packable found for class: java.util.Date