Fix Pyroma warnings

[moy]

Just discovered Pyroma, and it has complains about MechanicalSoup:

$ pyroma .
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Checking .
/usr/lib/python3/dist-packages/setuptools/dist.py:474: UserWarning: Normalizing '1.0.0-dev' to '1.0.0.dev0'
  normalized_version,
Found MechanicalSoup
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Your package does not have keywords data.
Your package does not have author data.
Your package does not have author_email data.
Specifying a development status in the classifiers gives users a hint of how stable your software is.
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Final rating: 7/10
Jarlsberg
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Should be straightforward to fix.