prepare for release of 1.9.0

Author: garak

Handler/DownloadHandler.php

@@ -54,6 +54,7 @@ public function downloadObject($object, string $field, ?string $className = null
      * @param resource    $stream
      * @param string      $filename
      * @param string|null $mimeType
+     * @param bool        $forceDownload
      *
      * @return StreamedResponse
      *

Resources/doc/symfony_support_policy.md

@@ -2,7 +2,7 @@ Symfony support policy
 ======================
 
 As indicated by the contraints defined in the `composer.json` file, this bundle
-supports Symfony `^3.4|^4.0` in its latest version (`1.8.*`).
+supports Symfony `^3.4|^4.0` in its latest version (`1.9.*`).
 
 Older Symfony versions that are still supported in previous bundle versions (`1.5.*`/`1.7.*`).
 
@@ -12,7 +12,7 @@ versions of this bundle, but there's no active support here.
 If you want to get updates on old versions, you can do a Pull Request on older branches
 of this bundle, maybe it will be merged.
 The same policy applies to old versions of PHP, out of active support: this bundle is actively
-supporting PHP 7.1 and 7.2.
+supporting PHP 7.2 and 7.3.
 
 You can check if a given Symfony version is still supported by visiting [their
 Roadmap page](http://symfony.com/roadmap).

composer.json

@@ -16,7 +16,7 @@
     ],
     "extra": {
         "branch-alias": {
-            "dev-master": "1.8.x-dev"
+            "dev-master": "1.10.x-dev"
         }
     },
     "require": {