Add support for sequence diagrams

UMLBoard should also support sequence diagrams. This will be a feature developed in several iterations. For the first version, sequence diagrams should be separated from class diagrams.

Some ideas about sequence diagrams, definitely worth a read.

Some planned features

• Users should be able to choose whether they either want to create a sequence or a class diagram. We can use the same file format and adjust only the diagram type.

Elements that should be supported

• Actors

• Objects

• Lifelines

Check the UML specification for more elements and interaction (p. 595):

UML Specification for Sequence Diagrams