CQRS+ES tutorial requirements

composer.json

{
  "require": {
    "php": "^7.1",
    "ext-pdo": "*",
    "ext-pdo_sqlite": "*",
    "bernard/bernard": "^1.0@DEV",
    "doctrine/dbal": "~2.5",
    "filp/whoops": "^2.1",
    "prooph/event-sourcing": "~4.0",
    "prooph/event-store": "^6.0",
    "prooph/event-store-bus-bridge": "^2.0",
    "prooph/event-store-doctrine-adapter": "^3.0",
    "prooph/psb-bernard-producer": "^2.0",
    "prooph/service-bus": "~5.0",
    "zendframework/zend-expressive": "^1.0.0",
    "zendframework/zend-expressive-fastroute": "^1.0",
    "zendframework/zend-servicemanager": "^3.0"
  }
}