Consider locking down the version of scipy in setup.py

[evasilchenko]

Hello,

We just ran into an issue with using talon 1.3.7 in our django application but the issue exists in the latest version of talon as well. Because scipy is not locked down to a specific version in setup.py we ended up installing scipy 1.2.0 which produced syntax errors while trying to run:

from talon.signature.bruteforce import extract_signature

You can find the associated scipy issue here

Please let me know if you need more details around this.

[pgcd]

Seconded - at least it would be convenient to know what versions of numpy, scipy and scikit-learn are known to work without warnings.