Maintainer: ‘Hengrui Cai <hcai5@ncsu.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Hengrui",
                      family = "Cai",
                      role = c("aut", "cre"),
                      email = "hcai5@ncsu.edu"),
               person(given = "Chengchun",
                      family = "shi",
                      role = "aut",
                      email = "cshi4@ncsu.edu"),
               person(given = "Rui",
                      family = "Song",
                      role = "aut",
                      email = "rsong@ncsu.edu"),
               person(given = "Wenbin",
                      family = "Lu",
                      role = "aut",
                      email = "wlu4@ncsu.edu"))
as necessary.
Maintainer: ‘Hengrui Cai <hcai5@ncsu.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Hengrui",
                      family = "Cai",
                      role = c("aut", "cre"),
                      email = "hcai5@ncsu.edu"),
               person(given = "Chengchun",
                      family = "shi",
                      role = "aut",
                      email = "cshi4@ncsu.edu"),
               person(given = "Rui",
                      family = "Song",
                      role = "aut",
                      email = "rsong@ncsu.edu"),
               person(given = "Wenbin",
                      family = "Lu",
                      role = "aut",
                      email = "wlu4@ncsu.edu"))
as necessary.