Functions:
- Sending notifications to a specific user by firebase id
- Sending notifications to a group of users
- Sending notifications using the conditions
- Get response after notification
- Able to send custom notifications via JSON
- You can save the list of applications
- Saves the history of sent notifications
- Work with HTTP v1

Privacy policy: https://sites.google.com/view/firebasepusher/privacy-policy
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula