Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Zuguang Gu <guzuguang@suat-sz.edu.cn>’
  
  New maintainer:
    Zuguang Gu <guzuguang@suat-sz.edu.cn>
  Old maintainer(s):
    Zuguang Gu <z.gu@dkfz.de>

No changes to worse in reverse depends.