Remove the emit method from IEventReceiver

Also make the library compatible with PHP 8

Author: na2axl

composer.json

@@ -10,7 +10,7 @@
     }
   ],
   "require": {
-    "php": "^7.1.10"
+    "php": ">=7.1.10"
   },
   "keywords": [
     "stream",
@@ -22,4 +22,4 @@
       "ElementaryFramework\\Core\\Events\\": "src/Core/Events/"
     }
   }
-}
+}

src/Core/Events/IEventEmitter.php

@@ -51,4 +51,4 @@ interface IEventEmitter
      * @return void
      */
     function emit(int $event, ...$params);
-}
+}

src/Core/Events/IEventReceiver.php

@@ -49,16 +49,5 @@ interface IEventReceiver
      *
      * @return void
      */
-    function on(int $event, callable $callback) : void;
-
-    /**
-     * Emit an event.
-     *
-     * @param integer $event  The event to emit.
-     * @param array   $callbacks The buffer of events callbacks.
-     * @param mixed[] $params The list of parameters to pass to the callback.
-     *
-     * @return void
-     */
-    function emit(int $event, ...$params);
-}
+    function on(int $event, callable $callback): void;
+}