MEDIUM / Change Trace TA model names. Improve OBPTraceTransition
convertion.
MEDIUM / Integrate Sequence diagram, add shapes for current states as
well as asynchronous messages support.
LOW / Add CDL converter for observers
LOW / Update Depart viewpoint, retrieve observers flexo concept
instances. Rename TraceVirtualModel
Merge branch 'master' of ssh://git@github.com/openflexo-team/departs.git

Conflicts:
	traceanalysis/src/test/java/org/openflexo/traceanalysis/RouteDrawing.java