feat: fix docs to show all docstrings

[pcriadoperez]

Fixes docs to include full API reference

Can test locally by:

cd docs
pip install -r requirements.txt
python -m sphinx -T -b html -d _build/doctrees -D language=en . output/html
cd output/html
python -m http.server

[coveralls]

coverage: 67.859% (+0.08%) from 67.779%
when pulling 72d9cdc on pcriadoperez:fix-docs
into 4dfcd74 on sammchardy:master.