Fallible systems

[simast]

Is there any way to implement fallible systems with legion? By fallible I mean avoiding .unwrap() and panics in the system and instead marshal the error back to the thread that actually started Schedule::execute.

So you could take that error and do something meaningful with it - maybe show an UI message box, log to console or retry etc.

Asking this as I though this is rather neat feature that seems to be supported natively in the new Sparsey ECS:

https://github.com/LechintanTudor/sparsey/blob/64367b8c1af647f09401d058334a42edaf231018/examples/errors.rs#L27-L32