Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Tomoaki Nishiyama <tomoaki@sci.u-toyama.ac.jp>’
  
  New maintainer:
    Tomoaki Nishiyama <tomoaki@sci.u-toyama.ac.jp>
  Old maintainer(s):
    Tomoaki Nishiyama <tomoakin@staff.kanazawa-u.ac.jp>

No changes to worse in reverse depends.