Configuration support to permit empty

[dbn1234]

Ciphersweet can allow (not throw an exception) when the encrypted field is empty (not part of the query).

This behavior can be controlled via setPermitEmpty(bool) as per :
paragonie/ciphersweet#83

Note: the cipersweet default is "false".

Can this option be controlled via the laravel-ciphersweet configuration file in a future release?

[aryala7]

@dbn1234 this feature was added in the latest release.