fix pypi package for steelscript 2.0 to run with a recent requests (e.g 2.25)

[gwenblum]

The current pypi package of steelscript 2.0 requires requests 2.21 (setup.py contains install requirements requests==2.21.0)
The recent code has already been fixed to accept >= 2.21.0.
A new pypi package of steelscript 2.0 is required just with the fix

[gwenblum]

fixed in 2.0.1 (based on 2.0)

To install type:

pip install steelscript==2.0.1

or just

pip install steelscript