Mark all classes as final

Author: clue

src/ExtEventLoop.php

@@ -20,7 +20,7 @@
  *
  * @link https://pecl.php.net/package/event
  */
-class ExtEventLoop implements LoopInterface
+final class ExtEventLoop implements LoopInterface
 {
     private $eventBase;
     private $futureTickQueue;

src/ExtLibevLoop.php

@@ -24,7 +24,7 @@
  * @see https://github.com/m4rw3r/php-libev
  * @see https://gist.github.com/1688204
  */
-class ExtLibevLoop implements LoopInterface
+final class ExtLibevLoop implements LoopInterface
 {
     private $loop;
     private $futureTickQueue;

src/ExtLibeventLoop.php

@@ -33,7 +33,7 @@
  *
  * @link https://pecl.php.net/package/libevent
  */
-class ExtLibeventLoop implements LoopInterface
+final class ExtLibeventLoop implements LoopInterface
 {
     /** @internal */
     const MICROSECONDS_PER_SECOND = 1000000;

src/Factory.php

@@ -5,7 +5,7 @@
 /**
  * The `Factory` class exists as a convenient way to pick the best available event loop implementation.
  */
-class Factory
+final class Factory
 {
     /**
      * Creates a new event loop instance

src/StreamSelectLoop.php

@@ -50,7 +50,7 @@
  *
  * @link http://php.net/manual/en/function.stream-select.php
  */
-class StreamSelectLoop implements LoopInterface
+final class StreamSelectLoop implements LoopInterface
 {
     /** @internal */
     const MICROSECONDS_PER_SECOND = 1000000;