Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Caleb Scheidel <calebjscheidel@gmail.com>’
  
  New maintainer:
    Caleb Scheidel <calebjscheidel@gmail.com>
  Old maintainer(s):
    Stu Field <stu.g.field@gmail.com>