I've set up a Windows build on Travis before, maybe I can help #296 a bit!
There's no Python pre-installed, but there's a package manager, choco, that can install it.

Currently, the tests fail because they seem to require Git's user.email and user.name to be set globally. They fail on my dev machine as well, since I don't have an e-mail set globally (I use different e-mail addresses on different repos).
Sadly, I can't devote time to fixing that issue, but I can help to reproduce or explain more if needed.

To try out changes privately, here's what I do:

• Enable Travis on your fork of the repo
• Uncheck "Build pused branches" and "Build pushed pull requests" on your fork's Travis settings (you'll want to trigger builds manually)
• Push code you want to test to your fork's master branch
• Use "Trigger build in Travis's "More options" menu to trigger the build
• Cancel any builds you're not interested in (for example, all the Linux builds) to save both time and processing