requests_toolbelt is not listed as a dependency

[soerenetler]

Hi, requests_toolbelt is used by not probably defined as a dependency in the setup.py. It is just used in one place. I think it would be a better approach to remove it to not add too many dependencies. I don't think it is even necessary there.

I would happily create a PR if it is decided which approach (add a dependency or change code) to go with.

[Kalebu]

Hi @soerenetler

This makes sense, if you have a better approach to reproduce what requests_toolbelt does without any extra dependencies please proceed and Create a PR for it.

[soerenetler]

This is solved with #36