5.17.0

Added

• Helper methods to specify a message priority (Documentation)

Changed

• giggsey/libphonenumber-for-php is now an optional dependency instead of a required one. It can be used to validate a phone number before sending it to the Firebase Servers, where an invalid phone number will be rejected anyway. If you want to continue using the "pre"-validation, please add the library to your project's direct dependencies, e.g. with composer require giggsey/libphonenumber-for-php:^8.9". (#577)