Bibtex might be incorrect

[ChristianSch]

Hi!

I had to change the BibTex to the following for it to work as intended:

@unpublished{scikit-multilearn,
    title={Scikit-multilearn: Enhancing multi-label classification in {P}ython},
    author={Szymański, P.},
    note = {Manuscript in preparation},
    year = {2014}
}

Changes include {P} and the comma in the authors name in order to get properly generated aliase. I ended up with "P.14" before, now it's "Szy14".