add warnings, change structure of ab class, reorganize SinglePrePost() in smaller functions, better support for tibble

Move html files to docs directory and add manuscript info

better axis and remove factors

Revert "improve plot and remove factors"

improve plot and remove factors

Add section getting started

remove _config.yml

Set theme jekyll-theme-minimal

Set theme jekyll-theme-slate

Set theme jekyll-theme-minimal

move package

first commit