[Spambayes] Need a bit of help with the Windows installer

[Skip Montanaro]

It seems I might have successfully built a Windows installer using the
Appveyor continuous integration platform. I don't have direct access
to Windows, however I was able to run the installer without error
using WINE, and start up the POP3 proxy. I've not tried to go any
farther.

I'm looking for a Windows user who would like to help wring out the
remaining bugs. If you can give it a whirl, the installer to test is
here:

https://ci.appveyor.com/api/buildjobs/dg5ewclrsvyiubnh/artifacts/spambayes%2Fwindows%2Fspambayes-1.1b3.exe

This includes the most recent changes to SpamBayes and embeds  Python
2.7.14. If you try it out and find problems, let me know. You can also
fork the project on GitHub:

https://github.com/smontanaro/spambayes/

and produce pull releases with putative changes. I'm working from the
"appveyor" branch. The appveyor.yml file is right at the top level.
I'm sure it's a mess. That's what happens when the developer knows
nothing about Windows and the only way to test anything is to push a
commit. (74 pushes...)

Skip