[Testing Platform] Aggregate Filter

[thomhurst]

I was actually thinking about mixes of filters earlier and whether that was worth supporting. You'd need a new type like AggregateFilter (like AggregateException) that wraps around multiple. Might be worth splitting that into its own issue if that sounds like a good idea to you?

Originally posted by @thomhurst in #3528 (comment)

As mentioned here, it would be good to be able to mix and match filters. This would need a new filter type that can wrap around a collection of filters.