1.0.4 Release

• This minor release introduces a new setExternalId() method that allows developers to use their own custom user ID's to send push notifications to users.
• Includes some fixes and improvements to our sample project

pubspec.yaml

@@ -1,6 +1,6 @@
 name: onesignal
 description: OneSignal is a free push notification service for mobile apps. This plugin makes it easy to integrate your flutter app with OneSignal
-version: 1.0.3
+version: 1.0.4
 author: Brad Hesse <brad@onesignal.com>, Josh Kasten <josh@onesignal.com>
 homepage: https://www.onesignal.com