push_android 0.0.4

Push notifications in Flutter without firebase_messaging.

0.0.4

• fix: update Android code to handle nullable case

0.0.3

• feat: update Pigeon to 2.x and remove the now-unnecessary methods to check for null

0.0.2

• feat: handle push notifications whilst app is terminated, in the background or in the foreground.
• feat: handle notification taps whilst app is terminated, in the background or in the foreground.

0.0.1

• Reserve pub.dev package name