swoole 4.0+

Author: lanlin

composer.json

@@ -4,7 +4,7 @@
     "description": "A swoole adapter for Codeigniter 3.0+",
     "keywords": ["Swoole", "Codeigniter", "Adapter", "Long Run", "Timers", "PHP", "Task"],
     "homepage": "https://github.com/lanlin/codeigniter-swoole",
-    "suggests": "Using this adapter within CodeIgniter 3.0+ and Swoole 2.0.0+, PHP 7.0+ would be better.",
+    "suggests": "Using this adapter within CodeIgniter 3.0+ and Swoole 4.0.0+, PHP 7.0+ would be better.",
     "license": "MIT",
     "authors" : [
         {
@@ -14,7 +14,7 @@
     ],
     "require": {
         "php": ">=5.6",
-        "ext-swoole": "^2.0.0"
+        "ext-swoole": "^4.0.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7.2"