Modify minimum php requirement in composer.json, a=chris

{
    "name": "seekquarry/yioop",
    "description": "Search Engine Portal with Front-end, Indexer, Crawler, Wiki, and NLP libraries",
    "homepage": "https://www.seekquarry.com/",
    "license": "GPL-3.0-or-later",
    "authors": [
        {
            "name": "Chris Pollett",
            "email": "chris@pollett.org"
        }
    ],
    "minimum-stability": "stable",
    "require": {
        "php": ">=5.4.0",
        "ext-dom": "*",
        "ext-gd": "*",
        "ext-json": "*",
        "ext-mbstring": "*",
        "ext-pcre": "*",
        "ext-PDO":"*",
        "ext-pdo_sqlite": "*",
        "ext-SPL":"*",
        "ext-zip": "*",
        "lib-curl": "*",
        "lib-libxml": "*",
        "lib-pcre": "*"
    },
    "autoload": {
        "psr-4": {
            "seekquarry\\yioop\\": ["work_directory/app/", "src/"],
            "seekquarry\\yioop\\tests\\": ["tests/"]
        }
    }
}