Lowercase for Planck and Gaussian (they're not classes).
Fix units warning in solar_flux
Added asValue.
Made models a submodule, still working on Dpv class.
Working on Geom
Brand new Geom.
MovingObject uses new Geom.
MovingObject cleanup.
Added stats to Geom. Geom complete. Added docs to MovingObject.

But is Geom computing good numbers?
surfaces update to take Quantities, and not ndarrays/floats.