To provide compatibility for PHPUnit 4.8, which is still necessary due to the PHP 5.5 requirement in this package.
This allows the tests against LATEST to pass on all versions.
A later update against the develop branch will bump the PHPUnit version to ^5.7 || ^6.0, and the PHP version to 5.6 || 7.0, allowing removal of these test overrides.
To provide compatibility for PHPUnit 4.8, which is still necessary due to the PHP 5.5 requirement in this package.
This allows the tests against LATEST to pass on all versions.
A later update against the develop branch will bump the PHPUnit version to
^5.7 || ^6.0, and the PHP version to5.6 || 7.0, allowing removal of these test overrides.