pytest >= 5.0.0
pytest-helpers-namespace >= 2019.1.8
pytest-xdist >= 1.31.0
pytest-cov >= 2.8.0
python-xmp-toolkit == 2.0.1  # requires apt-get install libexempi3
                     # or brew install exempi
#PyMuPDF == 1.13.4    # optional