v2.2.0 2022-08-21
Reintroduce default handler from pre-v2 again. Actually, this option is optional and not documented, because in this state it's a workaround to more general concept which can be called "ordering of matchers". It allows putting a very last matcher being at the top of router creation.
Currently, I have no idea (and TBH I didn't spend time on it) how to do it the right way. Despite there are many options like adding an attribute or a global sorter function, none of them feels like a solution. Because of that, use this option only if you migrate from pre-v2. I'm pretty sure the option will be removed again.