add branch to update transient for possible use in RESTful updates

CHANGES.md

@@ -10,6 +10,8 @@
 * Settings page now uses same function to update settings for both single/multisite
 * temporary fix for AJAX updates of private Bitbucket repos [#432](https://github.com/afragen/github-updater/issues/432), can only do one per page load, not very AJAXy :P
 * fixed `class Rest_Update` to avoid potential race conditions when RESTful endpoint is used as a webhook
+* added `branch` and `branches` to update transient, might be able to use this in RESTful update sometime
+
 
 #### 5.5.0 / 2016-07-02
 * better internationalization for changing plugin _View details_ link

src/GitHub_Updater/Plugin.php

@@ -465,6 +465,8 @@ public function pre_set_site_transient_update_plugins( $transient ) {
 					'new_version' => $plugin->remote_version,
 					'url'         => $plugin->uri,
 					'package'     => $plugin->download_link,
+					'branch'      => $plugin->branch,
+					'branches'    => array_keys( $plugin->branches ),
 				);
 
 				/*

src/GitHub_Updater/Theme.php

@@ -689,6 +689,8 @@ public function pre_set_site_transient_update_themes( $transient ) {
 				'new_version' => $theme->remote_version,
 				'url'         => $theme->uri,
 				'package'     => $theme->download_link,
+				'branch'      => $theme->branch,
+				'branches'    => array_keys( $theme->branches ),
 			);
 
 			if ( $this->can_update( $theme ) ) {