update with master

.gitlab-ci.yml

.pre-commit-config.yaml

CHANGELOG.md

CONTRIBUTING.md

bilby/core/grid.py

bilby/core/likelihood.py

bilby/core/prior/base.py

bilby/core/prior/conditional.py

bilby/core/prior/dict.py

bilby/core/prior/joint.py

bilby/core/result.py

bilby/core/sampler/__init__.py

bilby/core/sampler/base_sampler.py

bilby/core/sampler/cpnest.py

bilby/core/sampler/dynamic_dynesty.py

bilby/core/sampler/dynesty.py

bilby/core/sampler/emcee.py

bilby/core/sampler/kombine.py

bilby/core/sampler/ptemcee.py

bilby/core/sampler/pymc3.py