Closes #156

[ocefpaf]

Add a manifest file and fixed the setup.py to prevent faulty installation without dependencies and required files.

[ocefpaf]

I need some help understand the test call here. I'm not familiar with go and my local tests with standard python the CLI call still works.

[flosell]

The go script is just a bash script that orchestrates different things - in this case, what's failing is the test-setuptools script.
It's running python setup.py install and after that trailscraper guess in a clean docker container to see if everything installs correctly.
From what I can see, on your PR the console_scripts aren't generated or installed, therefore the installation actually doesn't install the trailscraper command into the PATH.
Comparing with a good build, I also done see any dependencies being installed... So something is off here