Phenomt review

Description

Add new waveform models IMRPhenomT and IMRPhenomTHM

• Non-precessing quasi-circular BBH models in the time domain.
• Review notes: https://git.ligo.org/waveforms/reviews/phenomt/-/wikis/home
• Review statement: https://git.ligo.org/waveforms/reviews/phenomt/-/wikis/home#stage-1-review-sign-off-for-non-precessing-models

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

If any of the Backwards Incompatible check boxes are ticked please provide a justification why this change is necessary and why it needs to be done in a backwards incompatible way.

Review Status

Review signed off and presented on Waveforms+NR call: December 10, 2020. Review statement: link.