Z with a diacritic sign replaced with a regular z.

I know it's weird, but this really is the deal—the z with this upper sign (sorry, I don't know how it's called) causes pip crash under Windows.

I'm not really very much into this cp1251 business. Maybe, you could understand it better and suggest a workaround. It'd be unfair to change your last name to make it work under Windows :-)

Anyway, with this little change, the extension installed OK under Python 3, Windows.

Thanks!