(learnerND) no more (almost) flat simplices in the triangulation

fix bug that tiny volume simplices may occur on the surface of the convex hull of a triangulation.

This change will make sure that all simplices which are (almost) flat are never added. This is needed for some notebook I wrote

Closes #111 (closed)

added 9 commits

• 533de58e...3696d4c1 - 8 commits from branch master
• 16d4b1d0 - fix bug that tiny volume simplices may occur on the surface of the

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LGTM! I slightly changed the doc-string and used np.mean instead of sum / len.

I think @anton-akhmerov might want to take a quick look at it before I merge it.

assigned to @anton-akhmerov

added Bug LearnerND labels

Also LGTM

added 2 commits

• 64e14836 - 1 commit from branch master
• 381cedb9 - fix bug that tiny volume simplices may occur on the surface of the

Compare with previous version

merged

mentioned in issue #125 (closed)