Add $result parameter to after_execute_snippet

[signo]

Hi, congrats on releasing the new version. I think is necessary to add the $result parameter to the after_execute_snippet hook, if you add the $result parameter the developer will know if the snippet failed execution. if you check PHP documentation for eval it says that it return false when the evaluation fails.

[sheabunge]

Thanks for the suggestion; I've added it and it will be included in the next release. I'm not entirely sure if it is better to just pass the value returned from eval straight in, though, as all you'd really be using it for is to check if the snippet execution was successful. Perhaps a better solution would be to only run the after_execute_snippet hook if the snippet execution succeeded, and run a different action otherwise.