6.19.0: Merge pull request #47 from nonanerz/apns_topic

add APNS Topic header

6.18.0: Merge pull request #42 from ds762/apns-collapse-id

add apns-collapse-id for Apple devices

6.17.2: Merge pull request #39 from deguif/json_encode-custom-exception

Review custom exception handling with JsonSerializable

6.17.1: Merge pull request #37 from nonanerz/apns_critical_sound

apns critical alerts

6.17.0: Merge pull request #36 from javer/symfony6-php81

Add Symfony 6 and PHP 8.1 support

6.16.0

Update CHANGELOG.md

6.15.1

Update CHANGELOG.md

6.13.0

Update CHANGELOG.md

6.7.0: Merge pull request #15 from ruslankovalov/notification_priority

Add notification priority field to message object (GCM only)

6.6.1: Merge pull request #14 from javer/fix-paginator

Fix a bug with sending broadcast messages