[scikit-learn] ANN: scikit-learn 0.21.2 released

[Olivier Grisel]

A quick bugfix release to fix a critical regression in the computation
of the euclidean distances returning incorrect values silently.

This release also includes other bugfixes listed in the changelog:

https://scikit-learn.org/0.21/whats_new.html#version-0-21-2

The PyPI.org wheels and conda-forge packages are online. The packages
for the default Anaconda channel should follow soon.

Thanks to all the contributors!

-- 
Olivier
http://twitter.com/ogrisel - http://github.com/ogrisel