The ellipses are now plotted using the fit_ellipse function. Every tenth position the variation results are plotted in black. See license for source.
If the soundsource does not have applied values, the measured soundspeed will be used in the TOA edit window.
Bugfix, the reload functions now restore either float or soundsources applied values after reloading.
The soundsource combinations table now has a "use" boolean for enabling/disabling the combination during tracking.
