Would it be possible to add conda packages (and wheels) for windows for master? That would make testing packages much easier and appvoyer can also run the test suite.

What would be needed:

• conda recipe (based on https://github.com/conda/conda-recipes/tree/master/matplotlib and modified to build a wheel as well)
• appveyor.yml configured for master only and with a setting that the results should be available as artifacts

That setup would build matplotlib packages on each push to master. I can probably do a PR for this...

See PR in #5604