Have moved SquareMap into LaunchPad and done a bit of work on making it more wxPythonic and adaptable.  I've also made it handle "empty" space better, so that if you have time spent in local for a given parent it shows up as empty space in the parent.  That's important in RunSnakeRun because you want to see local time for methods.  There's now both a "selection" and a "highlight" in the square map, so that we can have other controls update the selection while having the highlight move with the mouse. Have also cleaned up the rendering a bit.

At this point I have most of the functionality I want in the squaremap, it's just a matter of integrating it into RunSnakeRun so that you can visually explore and have the textual explorations update at the same time.