chore: fix rtd python version

docs: fix changelog title for pypi desc

docs: update release date

Merge branch 'feat/pyexcel'

chore: requirements.txt files

docs: expand cli and api docs

refactor: move make_path

refactor: clean data in read

Merge branch 'sphinx-docs' into feat/pyexcel

docs: nicer docs with sphinx

docs: partial doc update

fix: don’t skip .PDF files

style: reformat style.py with black

chore: update version, add to code

style: reformat with black