Deprecated constructor naming

I'm using DAViCal 1.1.5 with AWL 0.57 on my Arch Linux machine with PHP(-FPM) 7.1.5. Since the last update, I'm getting the following deprecation warnings in my webserver log file:

2017/05/12 11:31:16 [error] 18109#18109: *1497 FastCGI sent in stderr: "PHP message: DAViCal setup.php: Informational: /usr/share/awl/inc/Session.php(58): [8192] Methods with the same name as their class will not be constructors in a future version of PHP; Session has a deprecated constructor PHP message: DAViCal setup.php: Informational: /usr/share/awl/inc/iCalendar.php(57): [8192] Methods with the same name as their class will not be constructors in a future version of PHP; iCalProp has a deprecated constructor PHP message: DAViCal setup.php: Informational: /usr/share/awl/inc/iCalendar.php(353): [8192] Methods with the same name as their class will not be constructors in a future version of PHP; iCalComponent has a deprecated constructor PHP message: DAViCal setup.php: Informational: /usr/share/awl/inc/MenuSet.php(21): [8192] Methods with the same name as their class will not be constructors in a future version of PHP; MenuOption has a deprecated constructor PHP message: DAViCal setup.php: Informational: /usr/share/awl/inc/MenuSet.php(222): [8192] Methods with the same name as their class will not be constructors in a future version of PHP; MenuSet has a deprecated constructor" while reading response header from upstream, client: <my-ip-adress>, server: <my-server-name>, request: "GET /setup.php HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "<my-host-name>", referrer: "https://<my-host-name>/admin.php?action=edit&t=principal&id=1001"