Multiple nodes can be selected.  Need to add a check box or allow shift+click functionality (currently each node is toggleable).
Made a bit of a sloppy hack, and now shift+click is supported.  Clicking on a single node will send a RPC for log-lines as before (while deselecting any other nodes), and holding shift while clicking will allow the user to toggle the selections of multiple nodes (any nodes can be selected including initial and terminal).
Addressed most of code review.  Also added a better way to track selected nodes (within the dracula graph itself rather than through a copy).  Refinement bug (mentioned in issue tracker under issue 160) is still outstanding, however.
Fixed (hopefully) the refinement bug.  Also cleaned up functions, updated a tooltip to better reflect what clicking on nodes does.
Merged with default
Fixed some bugs I noticed after the merge by making a few elements within GRAPH_HANDLER global.
Removed a bug when jumping to the final model (some nodes could be selected, but not all).
Cleaned up code for a much simpler solution.
Closing branch.
Merged in Issue160
Merged in Issue192
Merged Issue195 into default.
Hovering over a rectangle will highlight all rectangles of that type. Haven't implemented unhighlighting when finished hovering over a rectangle.
Unhighlight node when no longer hovering over node.
Set mouseover and mouseout events for the label text to be the same as the rectangle.
Added an issue 202 reference to an existing TODO.
Merged heads and closing branch.