CI: add use Azure

[jreback]

numba project added support for Azure CI pipelines: numba/numba#3303

https://azure.microsoft.com/en-us/services/devops/pipelines/

looks like 10 parallel pipelines for open-source projects on mac, linux, windows OS.

we could replace appveyor with this I think.

cc @pandas-dev/pandas-core

[TomAugspurger]

@jreback did you (or someone else) grab the "pandas" organization name on azure devops? If not, I can grab pandas-dev before someone else does and add people to it.

[jreback]

nope feel free to grab

[TomAugspurger]

OK, I have http://dev.azure.com/pandas-dev. Email me with your azure devops account name if you want permission. I haven't done anything on the GitHub side yet.

…

On Fri, Sep 14, 2018 at 7:58 AM Jeff Reback ***@***.***> wrote: nope feel free to grab — You are receiving this because you are on a team that was mentioned. Reply to this email directly, view it on GitHub <#22690 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABQHIjd_p-DiAO8O8xEkASmeGcO9Vtf_ks5ua6fogaJpZM4WnQfw> .

[jeremyepling]

I'm a product manager on Azure Pipelines. Let me know if you run into any issues.

[gfyoung]

@TomAugspurger : I have an account on Azure Devops. Same email as the one you see on my commits.

[chrispat]

I am a PM on Azure Pipelines as well please feel free to ping me if you need any assistance.