* website/docs: initial commit
* Change secondaryColor
* Fix index.css not being copied and included on global stylesheet
* Fix stylesheet link
[skip ci]
* Change documentation link to API(Usage)
[skip ci]
* Add `Libraries` in usage
[skip ci]
* Remove documentation from `README.md` and add link to the site
[skip ci]
* Use KaTeX in the parent directory to build Markdown
[skip ci]
* Revise function support page. Avoid error msgs.
* General edit to function support page
