Comment 8 for bug 1774065

I workarounded it on Weekend [1]. I wanted to test it before the commit into the Yade's trunk. There are really problems with the new numpy 1.14, python 2 and bz2. tar.gz works.

Also there were some problems with the new sphinx [2]. It should also be backported into the Yade's trunk.

[1] https://salsa.debian.org/science-team/yade/blob/master/debian/patches/10_fix_bz2_pyhon2_problem.patch

[2] https://salsa.debian.org/science-team/yade/blob/master/debian/patches/12_fix_doc_generation.patch