New listen API

Event subscriptions now take place before *any* boot method is called.
This ensures that all event listeners are registered before things
happen – e.g. locales are registered before the translator is
instantiated in the Tags extension's boot method.

stubs/extension/src/Extension.php

@@ -5,23 +5,8 @@ use Illuminate\Events\Dispatcher;
 
 class Extension extends BaseExtension
 {
-    /**
-     * Bootstrap the application events.
-     *
-     * @return void
-     */
-    public function boot(Dispatcher $events)
+    public function listen(Dispatcher $events)
     {
         $events->subscribe('{{namespace}}\Listeners\AddClientAssets');
     }
-
-    /**
-     * Register the service provider.
-     *
-     * @return void
-     */
-    public function register()
-    {
-        //
-    }
 }