Fix Requests so it can gunzip the request body

I wasn't emulating the stateful file-object in my response stub,
so urllib3 wasn't decompressing gzipped bodies properly.  This
should fix that problem.

Thanks @bryanhelmig for the motivation to dig into this.
Remove Some stray \t characters

I guess that's what I get for playing around with my vimrc.

Thanks to @bryanhelmig for pointing these out.