I put it in the option block because the idea is that you don't necessarily need it if `Representation`s don't do any string parsing beyond what's in `Angle`.  The key point is that `Representation`s accept normal angle objects.  That is, the equivalent, with no need for `store_as` is:

```
c2 = coords.SphericalRepresentation(Longitude('5:10:20.52', u.hourangle).to(u.radian), Latitude('+23:23:23.5', u.degree).to(u.radian))
```

Or do you (or @mdboom) still think `store_as` is needed in this case?