What docstring convention should one use?

[e10e3]

In CONTRIBUTING.md, it is stated that River follows Google docstring conventions.

In contrast to this recommendation, the code widely uses Numpy's convention (see an example here).

To support this de facto standard, the docstring parsing code uses Nympy's doc library.

Should the new code migrate to Google's style? Or are the contributing guidelines wrong?

[gbolmier]

The contributing guidelines doc is outdated on this, we switched from this commit 5 years ago