1.55:
-----
  * Replace libs with PHPMailer-6.9.1
    @see https://github.com/PHPMailer/PHPMailer/releases/tag/v6.9.1

1.54:
-----
  * Replace libs with PHPMailer-6.8.1

1.53:
-----
  * Replace libs with PHPMailer-6.7.1

1.52:
-----
  * Replace libs with PHPMailer-6.6.5

1.51:
-----
  * Replace libs with PHPMailer-6.6.4

1.50:
-----
  * Replace libs with PHPMailer-6.6.3

1.40:
-----
  * Replace libs with PHPMailer-6.6.2
    @see commit changes, https://github.com/PHPMailer/PHPMailer/releases/

1.30:
-----
  * Replace libs with PHPMailer-6.1.7
    @see commit changes, https://github.com/PHPMailer/PHPMailer/releases/

1.20:
-----
  * Raise PHP requirement to minimum PHP 5.6 for the updated libs
  * Replace libs with PHPMailer-6.1.1
    @see commit changes, https://github.com/PHPMailer/PHPMailer/releases/tag/v6.1.0

1.10:
-----
  * Replace libs with PHPMailer-6.0.7 (for better PHP7 support?)

1.01:
-----
  * Added legal property bag information for gdpr/dsgvo

1.00:
-----
  * Replace libs with PHPMailer-6.0.4
  * Cleanup and fixing typos
  * Requires min PHP 5.5