Bug report

Hi,
I am using PHP-scoper for packaging a WordPress plugin, so I don't really get much control over which PHP versions it will be running with. Recently I got reports of syntax error, unexpected ‘:’, expecting ‘{‘ in the scoper-autoload.php file and was surprised to find that it contains return type annotations, possibly as an artifact from the build process. I tried to look for info about supported runtime php versions in the project, but couldn't find any

I assume composer minimum version is the version of PHP php-scoper runs on, but the output would respect the source code it processes...