Add support PHP 7.2 version

[k-k-spiilmusic]

There is used old library for code generating https://github.com/memio/memio. Latest update 2 years ago.
It causes following error:
PHP Fatal error: Cannot use Memio\Model\Object as Object because 'Object' is a special class name in phar:///usr/local/bin/jeeves/src/Jeeves/Console/Command/PaymentGateway.php on line 12