Update data files for rounding adjustment.

Update data files for rounding adjustment.

* airports, places, stations, zctas, zones: Regenerated from the same
base dataset used in 2.0, but this time with weather.py's updated
correlate function which rounds radian floats to 7 decimal places. No
nodes were added or removed, and the only changes were to take their
coordinate and distance values from sub-nanometer 10^-16 precision to
sub-meter 10^-7, which is still generally at least an order of magnitude
smaller than the base data precision anyway. This should almost entirely
solve any rounding error fuzz in subsequent data file updates.