When you add a director to a composite actor, now it is also added as an
attribute (before it wasn't that way).

exportMoML() method has been (roughly) implemented, and moved in
NamedObj instead of Entity, Port, Relation and Attribute. Seems to work
quite good, but some modification are surely needed.

A simple case test has been coded: two const, an adder and a display.
Tests have shown some issues with AtomicActor ports and XML header (see
Test.java for info), but with "tappulli" Ptolemy is able to read the
generated file!