6.10.0

• chore: add liip/rmt as a dev dependency

• chore: allow phan/phan ^4

• feat: add methods to get diff statistics

  $differ->getStatistics();
  DiffHelper::getStatistics();

  both return something like

  [
    'inserted' => 0,
    'deleted' => 0,
    'unmodified' => 0,
    'changedRatio' => 0.0,
  ]

• fix: deprecated method in .php_cs