[FIX] Exclude tests module from packages to build.

[mathdugre]

This change is to fix #46.

[NickolausDS]

Thanks for the PR!

Since this package uses MANIFEST.in, it might be better to specify excludes there. Something like:

prune tests
prune examples
global-exclude .*

[mathdugre]

I'm not so familiar with the packaging procedure.
Should it only be included in MANIFEST.in? Or in both setup.py and MANIFEST.in?

[NickolausDS]

It would be best if it was only a single location. I'm not too familiar with the differences between passing args through find_packages() vs using a MANIFEST.in file, but the latter has worked pretty well and I would prefer to continue using it unless we have a good reason to switch.

[mathdugre]

Hi @NickolausDS , I made the requested changes. If there is nothing else, I think this would be ready to be merged.

[NickolausDS]

Thank you!