Changes:

• Make missing multiprocessing primitives throw an exception on use rather than on import. This affected the packages joblib and librosa (#21).
• Make ctypes.util.find_library search libraries installed with pip. This affected the package soundfile (#201).
• Fix “invalid constraint” error affecting the packages openpyxl and webcolors.

The following packages have been added to the repository since the previous version:

• xgboost

And the following packages have been updated:

• grpcio (1.30.0)