Error on import: ModuleNotFoundError: No module named 'scipy

Short description of the problem:
With a fresh install on OSX (stdpopsim-0.2.0-py3-none-any.whl - installing via pip) I get this error

(base) ggorjanc@mvm-eb-m19002 ~ % python
Python 3.10.8 | packaged by conda-forge | (main, Nov 22 2022, 08:27:35) [Clang 14.0.6 ] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import stdpopsim
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/Caskroom/mambaforge/base/lib/python3.10/site-packages/stdpopsim/__init__.py", line 28, in <module>
    from .catalog import *  # NOQA
  File "/usr/local/Caskroom/mambaforge/base/lib/python3.10/site-packages/stdpopsim/catalog/HomSap/__init__.py", line 6, in <module>
    from . import demographic_models  # noqa: F401
  File "/usr/local/Caskroom/mambaforge/base/lib/python3.10/site-packages/stdpopsim/catalog/HomSap/demographic_models.py", line 3, in <module>
    from scipy import stats
ModuleNotFoundError: No module named 'scipy'

Suggested fixes:
Should scipy be added to requirement/config?

Looking at

stdpopsim/requirements/CI/requirements.txt

Line 18 in d89010f

scipy==1.10.1

I see scipy is mentioned!?

Hm - I see that the most recent release (0.2.0) did indeed use scipy but did not have scipy under install_requires in setup.cfg. That was an error, looks like - and I don't know why that didn't get caught by something. Seems like we need an additional installation check in CI somewhere.

However, since then we've removed scipy, so this won't be a problem for the next release?

So - I think we can close this, but this can be replaced by #1518?

Thanks @petrelharp !