Add more "requests" params

[arossert]

Hi @gbowerman,

First of all, thank you for a very nice module.

I looked at the code and it does not seem that there is a way to pass more arguments to requests, I specifically need to use proxy and I can't find a way to do it.
I can see that the last commit was a while ago and wanted to ask if this module is still maintained? If I will create a PR to pass more parameters to requests will you consider merging it?