v9.0 | Laravel 9 Ready
New version introduces:
- automatic casting of Mailgun event names to lowercase,
- require illuminate/support: ^8.0|^9.0
- drop support for Laravel below 8
As noted in #17 there are apparent some inconsistencies between sandbox and production environments for mailgun. The change will affect both events key and jobs config keys. Regardless what case Mailgun send the event name, it must always be lowercase in config.