Implement pictogram-nudge-right functionality, to make sure that
neighbouring pictograms move automatically and that all arrows are
directed towards the right.
Fix incorrect comment.
First implementation of an auto-layout algorithm for placing members on
a package diagram.
Implement a very heuristic algorithm for placing package diagram members
along the y axis.
Add ability to create merge file groups, but dragging an existing file
group on top of another.
Display the correct file group type name in UIFileGroup tool tips.
Modify FileGroupContentPropertyPage to use the JFace TreeViewer, rather
than a simple list box. This allows for future modification to support
"merge file groups".