Fix 403 Forbidden by providing most common user agents

[mwalercz]

Fixes #89

[devxpy]

I really appreciate your effort. Don't understand why this guy won't merge :/

[mwalercz]

Thanks :)
It seems that this repo is not maintained anymore ;(

[pawamoy]

I sent an email to @karan to see if he's willing to come take a look and merge PRs.

If we don't get an answer, maybe it's time to fork then? Who would be willing to host the fork?

[pawamoy]

My mail was not delivered, so I think we can move on and fork it.

[JPFrancoia]

Could you guys please indicate where you forked? I'd be happy to contribute too.

[pawamoy]

Forked into https://github.com/pawamoy/TPB. I still did not release to PyPI. I'll try to do it soon. I'd like to add other maintainers on the future PyPI namespace as well. See #95

[pawamoy]

Released under the tpb namespace on PyPI: https://pypi.org/project/tpb/