Add documentation.

[gbbr]

We need to add more documentation, both to the API, and to the package as a whole, especially the examples. It is unclear what each example is, how to use it, and what it represents.

[Psychodahlia]

Hi @gbbr if you still need help documenting the APIs, I would be happy to help. I took some Udemy courses on API documentation, and I'm looking for some hands on experience.

[hamzmu]

@gbbr is this issue still open?