Please release wheels with / before source
I see that y'all have just released 0.20 to Pypi - congratulations!

But ... I see that you've released the source .tar.gz package, and the Windows wheels, but not yet the OSX and Linux wheels.

I wonder whether you would consider collecting the various wheels, and then releasing the source and wheels together, or the wheels before the source?

Otherwise, if you release the source before the wheels, users installing Pandas will, for a time, start to get a source install when they would previously have got a binary install, which is likely to be surprising, and might well fail.

In particular, this might have caused the travis-ci failure for matplotlib over here: https://travis-ci.org/matplotlib/matplotlib/jobs/229149439(

Thanks for considering.