Not supported import

[Dirtstone]

While tying to get the tool running I always got this error when trying to import provenance.

It's origin is in the hashing.py in root with following import

After a little bit of research i found that joblib does not have the _compact module anymore. I needed to go back to version 0.14.0 to get everything working. For future users it would be nice if you could add an additonal version requirment to the joblib package or adapt the code to newer joblib versions.