Make TransactionalDispatcher extend EventDispatcher

[Hanson]

That's some problem when I use TransactionalDispatcher And Sentry both.

https://github.com/getsentry/sentry-laravel/blob/master/src/Sentry/SentryLaravel/SentryLaravelEventHandler.php#L72

SentryLaravelEventHandler::handle(Dispatcher $dipatch) require a Dispatcher but got a TransactionalDispatcher, to work perferlly TransactionalDispatcher can extends Dispatch

[fntneves]

Hi @Hanson,

Thank you for opening this PR.

Could you please tell me which version of Sentry and Laravel are you using?
I've noticed before this was a problem, but Sentry fixed it by changing the method's signature to the Dispatcher interface. See getsentry/sentry-laravel#107

[Hanson]

My sentry's version was too old, obviously that's no longer a problem, thanks

[fntneves]

@Hanson I will merge this out, there all many repositories with this problem. Thank you for your contribution.