Note that the Tracker website is now hosted on the physlets.org domain (http://physlets.org/tracker/). Please change the Tracker bookmarks/favorites in your browsers to point to this new site. (Soon--hopefully--your browsers will be automatically redirected to the new site from the old one at https://www.cabrillo.edu/~dbrown/tracker/.)
new circle fitter tool fits a circle to a set of points
new fit function autoloading with autoload manager in Data Tool
new data shifting in Data Tool
new user-settable descriptions of parameters and functions in data builder, model builder and fit builder
improved user control of font, icon and footprint sizes
improved data function autoloading with autoload manager
There are also a number of bug fixes in this new version. Please contact me if (when?) you discover any bugs in it ;-) And as always, I invite you to contact me with new ideas for improving Tracker!