Graph tooltips coming (for real)

The next beta version will, for real, have the long awaited graph tooltips over highlighted ProBalance events. Remember, it is the governor taking the action, so I had to get the inter-process communication code just right so that it was both time positioning accurate and asynchronous on the governor's end (so no blocking call). On the other side, the GUI's graph can't be stalling out in high load situations -- even if it has to go repaint events a second later than they occurred. Of course, the issue of multi-user systems with a single governor instance had to be handled too, as every instance of the GUI needs notified in such a case. I've got it perfectly designed now, simply. As always, when you find a simple solution, you know its the right one. So -- if you ever wanted to know why I put this off so long, just read above.. the feature is a good bit of critical design work that influences the efficiency of the software as a whole.

 I've got it all designed and partially implemented.. it is just grunt work from here on ;). With all this overhead (which maybe some people didn't consider), I will provide an option to completely disable it.

Later, I'll add other tooltips to show general process information at any time along the graph, which is information the GUI already has at its disposal.

I'm also continuing code review and testing of version 4. There are a few bug reports remaining to be tracked down, but it won't take much longer to go final. My current goal is a release candidate this week. From there, the testing and my confidence level in the code will determine the final release date.