Match yielded arguments in any order

An attempt at implementing a matcher like requested in #595, WDYT? (Needs cukes etc but this is a WIP)
I opted for sort because we know `expected` and `actual` will be arrays and should be able to at worst, sort them consistently as a string representation, but I'll admit I hadn't thought about argument matchers here. Mostly I just wanted to avoid iterating over both arrays multiple times.