Unhandled exception
https://github.com/animir/node-rate-limiter-flexible/blob/af6dfd420fa1b2acd1cb7e3ef9634b5e90c61c67/lib/RateLimiterCluster.js#L152

This throws an unhandled exception out to node, which crashes the application.

Can we just ignore invalid messages instead, so that this module can be used with other things which communicate via cluster messages?