#58 Add tooltip support to zgrviewer

[Ben Martin]

I see that there is an old request here saying that tooltips were included in 0.5.0, but I can't seem to get them to work in 0.8.2 or the latest snapshot.

I have attached the .viz file, and a svg generated by .dot.

Instead of the desired tooltip, the name of the node shows up.

[Ben Martin]

File with a tooltip that doesn't show up in zgrviewer.

[Ben Martin]

If I run:
dot -Tsvg -odemo.dot.svg demo.viz

The resulting svg file has a tooltip when viewed in a browser, but shows (2) when viewed in zgrviewer.

[Ben Martin]

svg generated by calling dot directly. Hover over (2) to see tooltip which is "magic".

[Ben Martin]

It looks like this should be closed. The newest version from SVN has working tooltips. Thanks.