This is a legacy version that requires PHP >= 5.6. Users that are on PHP 7.1 can and should use the newer version.
This package only exists to cater towards users that are not in any position to upgrade their host PHP version. As a result, any issues that appear in this package will not be fixed, no new features will be added and no enhancements will be done.
Note that the php-integrator-base package is required and needs to be set up correctly for this package to function correctly.
What is included?
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.