AstrometricFrame should wrap longitudes to -180 to 180 #5002
Description
The AstrometricFrame currently wraps longitudes to the range 0 to 360:
<SkyCoord (AstrometricICRS: rotation=0.0 deg, origin=<ICRS Coordinate: (ra, dec) in deg
(266.40498829, -28.93617776)>): (lon, lat) in deg
[(0.78239078, -1.37645176), (357.8364555, -4.21280028),
(2.67949142, -1.79884371), (354.25967185, -1.13503046),
(2.06089191, -4.54555418), (357.20109258, 0.42632721),
(1.18017391, -4.32400233), (358.00291391, -1.26503428),
(3.19026387, -0.39093311), (1.0480904, 2.47843479)]>
but I think it should be -180 to 180 by default, so that it really is an offset.