c(
       person("Guangchuang", "Yu",     email = "guangchuangyu@gmail.com", role = c("aut", "cre", "cph"), comment = c(ORCID = "0000-0002-6485-8781")),
       person("Shuangbin", "Xu",       email = "xshuangbin@163.com",      role = "aut", comment = c(ORCID="0000-0003-3513-5362"))
       )
Useful functions and utilities for 'ggplot' object (e.g., geometric layers, themes, and utilities to edit the object).
ggplotify, knitr, rmarkdown, prettydoc, tidyr, ggnewscale