Added new GPS test data and figures. Also, logbook instructions.
Ready to add console window to gui.
Finished gui, but one bug crashes.
Possibly fixed crashing. Added file menus and removed locks.
Changed terminal color.
Finished gui and packed in exe for win.

Need mac app, and need icon in tkinter.
Added LCD datasheet and renamed encoder uncertainty to old.
New GPS convergence data.
Finished non-bundles serial_logger, and fixed gps record test to be more robust.
Fixed gps record test to record timesteps.
Fixed gps record test time stamps.
Fixed gps record test time stamps.
Cleaned MATLAB temp files.
Fixed timestamp recorded gps.
Fixed timestamps in gps record and improved script.
Added gps error correlation test.
Merge branch 'master' into sonar