Bezitopo version 0.1.5 has been released.
Here are the contours of Independence Park. Bezitopo can save the scene to a file (file format in progress), but can't load it yet.
Here are the geoid files converted from all six NGS 2012 data files. The tolerance is 1.5 mm; the subdivision limit is 1 km. Bezitopo needs this file to compute elevation factors. The Alaska and Lower 48 files overlap, and there is a discrepancy in the overlap.
Contour generation is working correctly. Note that some discrepancies between the traced contours and the false-color elevation map are not bugs: as long as the elevation is within 1/10 of the contour interval (i.e. within 1 cm), the contours are correct.