Requirement files missing

[lkubb]

#29 removed the requirement declarations from the generated setup.cfg file in favor of separate files, but does not provide them. This is one of several issues that prevent even the initial commit after the generation of an extension from working.

I'm not certain what these requirements should ideally be at this point in time, hence I refrained from submitting a PR.

Thanks for your hard work!

[lkubb]

Using the released version from pypi, they are included, but they are not committed to this repository.