for non-standard things in the check directory

Maintainer: ‘Yalin Zhu <yalin.zhu@outlook.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Yalin",
                      family = "Zhu",
                      role = c("aut", "cre"),
                      email = "yalin.zhu@outlook.com"),
               person(given = "Rui",
                      family = "Qin",
                      role = "aut"))
as necessary.
Found the following files/directories:
  ‘animation.gif’
Maintainer: ‘Yalin Zhu <yalin.zhu@outlook.com>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Yalin",
                      family = "Zhu",
                      role = c("aut", "cre"),
                      email = "yalin.zhu@outlook.com"),
               person(given = "Rui",
                      family = "Qin",
                      role = "aut"))
as necessary.
Found the following files/directories:
  ‘animation.gif’
File ‘ph2bye/libs/ph2bye.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
Found the following files/directories:
  ‘animation.gif’
File ‘ph2bye/libs/ph2bye.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
Found the following files/directories:
  ‘animation.gif’
Found the following files/directories:
  ‘animation.gif’
Found the following files/directories:
  ‘animation.gif’
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory