Renamed folder to match migration to FCM and to avoid error

This is a patch to avoid an error when the FCM exceptions are not found

Supporting FCM

Migrate from GCM to FCM

Fix setBody call

Bugfix in setBody call thanks to @aporat

Remove getTimestamp return type

As timestamp property can be null we removed getTimestamp return type

Fix bug in decoding timestamp from APNS response

Fix bug in decoding timestamp from APNS response

Add sound support for APNS and debug mode

• Add debug mode in GCM and APNS
• Add notification sound support in APNS

Avoid warnings in type hinting

Avoid warnings in type hinting in APNS Response

Bugfix in method visibility

Change from private to public Device setters

Bugfix in GCM notifications

If GCM notification fails there's no message_id in response

Custom data support in APNS

This release adds support for custom data in APNS messages