HorizonsID_type should default to None

[cbender]

Astroquery v0.4.4 onward default id_type = None to search for major bodies first. Documentation should be updated here:

barycorrpy/barycorrpy/SolarSystemBC.py

Line 183 in 4f48f89

> 'majorbody' refers to planets or satellites. Use for Moon.

The desired search behavior for small bodies is passed throughout barycorrpy via the HorizonsID_type keyword. However, reflected light call to get Solar offset is still hard coded here:

barycorrpy/barycorrpy/SolarSystemBC.py

Line 251 in 4f48f89

SolObj2 = Horizons(id='Sun', location='@0', epochs=JDTDB-(TargetSolLightTravelDelay), id_type='majorbody')

[shbhuk]

I'll need to double-check this. My recollection is the line 251 quoted above is getting the Solar position vector wrt the SSB, and hence the id_type = 'majorbody'