Merge remote-tracking branch 'origin/master' into relbin

AUTHORS.md

README.rst

bilby/core/sampler/nessai.py

bilby/core/sampler/ptemcee.py

bilby/gw/conversion.py

bilby/gw/detector/interferometer.py

bilby/gw/likelihood/base.py

bilby/gw/likelihood/multiband.py

sampler_requirements.txt

test/core/sampler/nessai_test.py

test/gw/conversion_test.py

test/gw/likelihood_test.py

test/integration/sampler_run_test.py