• Kreait\Firebase\Messaging\CloudMessage can now be created without a target. The existence of a message target is now validated on send. This enables re-using a message for multiple targets.
• Improved reliability of discovering a ServiceAccount from environment variables. (huge thanks to @Shifu33 for helping to find and test this)
• It is now possible to disable the ServiceAccount discovery by calling Kreait\Firebase\Factory::withDisabledAutoDiscovery() (Documentation)