Merge branch 'master' into tests_update

.gitlab-ci.yml

CHANGELOG.md

cli_tupak/__init__.py

cli_tupak/plot_multiple_posteriors.py

docs/installation.txt

...injection_examples/basic_tutorial_dist_time_phase_marg.py

...ples/injection_examples/basic_tutorial_time_phase_marg.py

examples/injection_examples/change_sampled_parameters.py

examples/injection_examples/marginalized_likelihood.py

examples/other_examples/hyper_parameter_example.py

examples/other_examples/occam_factor_example.py

optional_requirements.txt

requirements.txt

setup.py

test/detector_tests.py

test/example_tests.py

test/gw_example_tests.py

test/other_tests.py

test/sampler_tests.py

test/utils_tests.py