{
    "name": "alexandresalome/mailcatcher",
    "license": "MIT",
    "type": "library",
    "description": "A library to access MailCatcher",
    "autoload": {
        "psr-0": { "Alex\\MailCatcher": "" }
    },
    "target-dir": "Alex/MailCatcher",
    "require": {
        "php":                     ">=5.3.3",
        "symfony/dom-crawler":     "~2.3|~3.0"
    },

    "require-dev": {
        "swiftmailer/swiftmailer": "~5.0",
        "behat/behat":             "~3.0",
        "phpunit/phpunit":         "~4.6"
    }
}

{
    "name": "alexandresalome/mailcatcher",
    "license": "MIT",
    "type": "library",
    "description": "A library to access MailCatcher",
    "autoload": {
        "psr-0": { "Alex\\MailCatcher": "" }
    },
    "target-dir": "Alex/MailCatcher",
    "require": {
        "php":                     ">=5.3.3",
        "symfony/dom-crawler":     "~2.3|~3.0|~4.0"
    },

    "require-dev": {
        "swiftmailer/swiftmailer": "~5.0",
        "behat/behat":             "~3.0",
        "phpunit/phpunit":         "~4.6"
    }
}

Add support for Symfony 4
Add support for Symfony 4
