V8, jsonlite, boot, MASS, methods, grDevices, stats, utils,
graphics
knitr, base64enc (>= 0.1-3), lavaan, testthat
knitr, base64enc (>= 0.1-3), lavaan, testthat, markdown
knitr, base64enc (>= 0.1-3), testthat, markdown, rmarkdown,
lavaan