Support filtering named segments

[jsg2021]

...so that route handlers get the decoded value(s)

To do so, pass a urlPatternOptions object with a property of namedSegmentValueDecoders. This property can be either: 1) function (name, value) => value 2) object with {name: function(value) => value, ...}

This provides the functionality described in #189

[STRML]

This seems good - could you add changes to the necessary docs?

[jsg2021]

Sure, which docs would you suggest? overriding url pattern options?

[STRML]

Yeah, https://github.com/STRML/react-router-component/blob/master/docs/override-url-pattern.md

[jsg2021]

I think the issues have been addressed :)

[STRML]

Yep, looks good. Thanks!

[STRML]

0.36.4