Build wheels

[rth]

Build wheels with cibuildwheel.

Closes #59

If we are feeling adventurous we could even push to PyPi on tags.

[rth]

I'm quite impressed with cibuildwheel . That relatively simple config builds and tests the following wheels in 3 CI jobs. Maybe we should consider it for scikit-learn though it probably gives less flexibility cc @thomasjpfan

scikit-learn-extra-0.1.0b2.tar.gz
scikit_learn_extra-0.1.0b2-cp36-cp36m-macosx_10_9_x86_64.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-manylinux1_i686.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-manylinux1_x86_64.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-manylinux2010_i686.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-manylinux2010_x86_64.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-win32.whl
scikit_learn_extra-0.1.0b2-cp36-cp36m-win_amd64.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-macosx_10_9_x86_64.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-manylinux1_i686.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-manylinux1_x86_64.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-manylinux2010_i686.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-manylinux2010_x86_64.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-win32.whl
scikit_learn_extra-0.1.0b2-cp37-cp37m-win_amd64.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-macosx_10_9_x86_64.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-manylinux1_i686.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-manylinux1_x86_64.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-manylinux2010_i686.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-manylinux2010_x86_64.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-win32.whl
scikit_learn_extra-0.1.0b2-cp38-cp38-win_amd64.whl

not sure why there are both manylinux2010 and manylinux1 wheel.

I disabled PyPy wheels as they was failing while installing scipy due to missing BLAS (MacPython/scipy-wheels#87 would fix it). It was building fine, the issue was while installing test dependencies (and I'm not sure how to skip running tests for PyPy).

Merging. I'll experiment with uploading RC to test.pypi.org with this CI in another PR.

[thomasjpfan]

I think cibuildwheel is worth checking out.

not sure why there are both manylinux2010 and manylinux1 wheel.

My initial thought would be that cibuildwheel would have build all the variations of manylinux*.

On a similar note, it looks like numpy builds manylinux1, 2010, and 2014 and scikit-learn only builds manylinux1.

(When I pip install numpy on ubuntu 18.04 I get the manylinux2010)