Eclipse Sirius 6.3.1

This is mostly a mainteance/bugfix release, but it also contains a few improvements in terms of diagrams rendering and ergonomics:

• #552977: Improved rendering for diagrams exported as SVG, which now look closer to what is displayed on screen (there used to be an issue with font metrics computation which resulting in incorrect font and labels sizes).

• #553775: A new type of "Jump Link" named "Tunnel" is now available and make diagrams more readable when there are many edges crossings. Note that this does not affect existing diagrams. If you want to use this new style by default for new diagrams you must ask for it in the preferences (it might become the news default in the next non-maintenance version). This new feature has been added directly in GMF and is available to other GMF-based modelers as of GMF Runtime 1.13.0.

• #560543: In sequence diagrams, the labels for operands are now drawn above the other elements so that they are always readable. They used to be partially obscured by other elements.