{
    "name": "cyrill/sucre-assertion",
    "require": {
        "php": ">=5.4.0"
    },
    "require-dev": {
        "phpunit/phpunit": ">=3.7.0",
        "mockery/mockery": "dev-master@dev",
        "mikey179/vfsStream": ">=1.2.0"
    },
    "license": "MIT",
    "authors": [
        {
            "name": "cyrill",
            "email": "siril.taka@gmail.com"
        }
    ],
    "autoload": {
        "psr-0": {
            "Sucre": "lib/"
        }
    }
}

{
    "name": "cyrill/sucre-assertion",
    "require": {
        "php": ">=5.4.0"
    },
    "require-dev": {
        "phpunit/phpunit": ">=3.7.0",
        "mockery/mockery": "dev-master@dev",
        "mikey179/vfsStream": ">=1.2.0"
    },
    "license": "MIT",
    "authors": [
        {
            "name": "cyrill",
            "email": "siril.taka@gmail.com"
        }
    ],
    "autoload": {
        "psr-4": {
            "Sucre\\": "lib/Sucre"
        }
    }
}

Change autoload rule psr-0 to psr-4
Change autoload rule psr-0 to psr-4
