Vignettes and other documentation

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Vignettes from package 'pdqr'

pdqr::pdqr-01-create		Create pdqr-functions with `new_*()`	HTML	source	R code
pdqr::pdqr-02-convert		Convert pdqr-functions with `as_*()`	HTML	source	R code
pdqr::pdqr-03-transform		Transform pdqr-functions with `form_*()` and base operations	HTML	source	R code
pdqr::pdqr-04-summarize		Summarize pdqr-functions with `summ_*()`	HTML	source	R code