Merge branch 'CI-overhaul' into 'master'

.gitlab-ci.yml

pyramid/__init__.py

pyramid/analytic.py

pyramid/costfunction.py

pyramid/diagnostics.py

pyramid/file_io/io_dataset.py

pyramid/file_io/io_phasemap.py

pyramid/file_io/io_projector.py

pyramid/file_io/io_scalardata.py

pyramid/file_io/io_vectordata.py

pyramid/magcreator/__init__.py

pyramid/projector.py

pyramid/quaternion.py

pyramid/utils/phasemap_creator.py

setup.cfg

setup.py

tests/test_phasemapper.py