argument animation can be moved almost at the same time
@MagnetRONAnimation and EdgeAnimation.

DeltaAnimation's unused ThreadPool shutdown.

Tidy up DeltaViewerSample.java and Adjustment when static class methods.

Change DeltaViewerSample#createObjectVertexOnConstructor() so that the
sourceCell refers to the absolute position.
Implemented DeltaViewerSample#createObjectReference()
for Collection.