Merge branch 'reflecting-boundaries' into 'master'

CHANGELOG.md

bilby/core/prior.py

bilby/core/sampler/dynesty.py

bilby/core/sampler/proposal.py

bilby/core/sampler/pymultinest.py

bilby/gw/prior.py

bilby/gw/prior_files/GW150914.prior

bilby/gw/prior_files/aligned_spin_binary_black_holes.prior

bilby/gw/prior_files/binary_black_holes.prior

bilby/gw/prior_files/binary_neutron_stars.prior

test/gw_prior_test.py

test/prior_files/binary_black_holes.prior

test/prior_files/binary_neutron_stars.prior

test/prior_test.py

test/proposal_test.py

test/sampler_test.py