Update PyPI package

[mrshu]

First of all, thank you for a very nice evaluation package!

When I was playing with it, my first instinct was to install it from PyPI (https://pypi.org/project/nervaluate/) but it seems the version there (0.1.8) is rather old (released in 2020) compared to the current version in the master branch (0.2.0).

Do you think it would be possible to update the PyPI package by any chance?

Thanks!

[ivyleavedtoadflax]

Done!