Resolve "lalinference.imrtgr.imrtgrutils.calc_final_mass_spin failing on master"
Description
This should fix #262 (closed) where bbh_average_fits_precessing() fails when called with scalar inputs. All the lower-level fit functions called by this wrapper through _return_quantity() already do proper vectorizing, so the single sanity check line that is changed in this MR should be the only bit that needs a fix.
API Changes and Justification
Backwards Compatible Changes
- This change introduces no API changes
- This change adds new API calls
Backwards Incompatible Changes
- This change modifies an existing API
- This change removes an existing API
Review Status
@nathan-johnson-mcdaniel can review
Closes #262 (closed)