Polished some internals, now 15% faster in the GithubAPI tests ~= 5x slower than the httprouter/go.

rewriting the segment-router would be the next step. Maybe write it with Java for the JVM: https://github.com/metosin/reitit/blob/master/modules/reitit-core/src/reitit/segment.cljc

or change it to a real prefix-tree, now splits on path segments.

https://en.wikipedia.org/wiki/Radix_tree