Mandolin v0.4.0-alpha

Mandolin v0.4.0-alpha, as described in:

@article{soru2017mandolin,
  title={Mandolin: A Knowledge Discovery Framework for the Web of Data},
  author={Soru, Tommaso and Esteves, Diego and Marx, Edgard and Ngomo, Axel-Cyrille Ngonga},
  journal={arXiv preprint arXiv:1711.01283},
  year={2017}
}

Paper available on arXiv.
Evaluation technical report available on GitHub.