New ephem.getspiceobj.
Fix test_ephem for new ephemeris behavior.
getspiceobj working now.
Clean up geom summary; add string representation.
Bugfix: util.planck was modifying the input wavelength array.
Update CHANGES.
Update davint to accept axis keyword.
Replace cmp_leading_num with leading_num_key.
util docfix.
Some new util tests.
Added util.timesten.
Removed wmean; weighted means can be made with numpy.average.
More util tests.
Update setup for tests.
Bug fix Plank (bad units for unitless wavelength input); Obfuscate redden.

I don't think redden() takes the correct approach.  Jewitt and Meech 1986
seems to be much simpler than this.
util.polcurve: correct function; util.savitzky_golay: crash fix.

polcurve was not consistently using theta in radians.
New util tests.
Fixed test_imshift crash.
Fix leading_num_key crash.
Properly make util.bandpass err an optional return.