sendmail PHP version 4.1 (April 24, 2026):
  * Created this change log.
  * Fixed typos in "DFD Whatever 1.2 license.txt".
  * Changed version numbers from 4 to 4.1 in "sendmail.php" and "contact.htm".
  * Changed in "sendmail.php":
    from: "sendmail4.php Copyright 2026 Jacob Persico"
    to: "sendmail.php Copyright 2026 Jacob Persico"
