Add electric octupole and magnetic quadrupole terms
Adds electric octupole and magnetic dipole contributions to the tidal phasing using eq 6.6b of https://arxiv.org/pdf/2005.13367.pdf and fits from https://arxiv.org/pdf/1807.08016.pdf and https://arxiv.org/pdf/1311.0872.pdf.
Edited by Aditya Vijaykumar